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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) Ecotrophic, Journal of Environmental Science

I Made Siaka

Program Studi Kimia, FMIPA, Universitas Udayana, Bali, Indonesia

Author-ID : 2921974

Chemical Engineering, Chemistry & Bioengineering Chemistry Electrical & Electronics Engineering Environmental Science

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TOTAL LOGAM Pb DAN Cr DALAM TANAH PERTANIAN DAN AIR DANAU BERATAN SERTA BIOAVAILABILITASNYA DALAM TANAH PERTANIAN DI DAERAH BEDUGUL I. G. Eka Saputra Jaya; I Made Siaka; Ni Putu Diantariani
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 1 Januari 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This paper discusses the total metal contents of Pb and Cr in soil of agricultural land and water of Lake Beratan, as well as their bioavailabilities in soil of the land in Bedugul area. This study aims to determine the total metals and the bioavailability of Pb and Cr in the soils of agricultural land in Bedugul area and determine the total metal Pb and Cr in the water of Lake Beratan. The total concentrations of Pb and Cr in soil samples and water of the lake were analyzed by using Atomic Absorption Spectrophotometer (AAS). The bioavailabilities of Pb and Cr in soil samples were also determined and analyzed by AAS. The results showed that the highest total concentrations of Pb and Cr were found in the soil located near the high way, which were 14.6162 mg/kg for Pb and 15.5380 mg/kg for Cr. The total concentration of Pb and Cr in water of Beratan lake were 0.2802 mg/L and 0.2213 mg/L respectively. Cr metal was more bioavailable compared to Pb metal in the soil of Bedugul area. Bioavailable Pb was detected only in the soil sample collected from the area near the high way, which was about 45% bioavailable (as extracted by HCl) and potentially bioavailable was about 27% (the different percentages of Pb extracted by EDTA and by HCl. On the other hands, bioavailable Cr metal was detected in every soil sample (60-76%) and its potentially bioavailable ranged between 6 and 17%.

SPESIASI DAN BIOAVAILABILITAS LOGAM BERAT Cu DAN Zn DALAM TANAH PERTANIAN ORGANIK DI DAERAH BEDUGUL Tri Rahayu; I Made Siaka; Ida Ayu Gede Widihati
Jurnal Kimia (Journal of Chemistry) Vol. 9, No. 2 Juli 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A research on heavy metal speciation and bioavailability of Cu and Zn in soil of organic agriculture in Bedugul area has been carried out. This study aimed to determine the total metal content, speciation, and bioavailability of Cu and Zn in the soil of organic agriculture aged 5 and 4 years in Bedugul area. The total metal content was performed by the used of a digestion method with a mixture of HNO3 and HCl (3:1) in the ultrasonic bath and followed by heating on the hotplate. Speciation and bioavailability of Cu and Zn was conducted using SET (Sequential Extraction Technique). The content of Cu and Zn in the total sample was analyzed using the Atomic Absorption Spectrophotometer (AAS) with a calibration curve method. The total metal concentrations of Cu in the organic agricultural land of aged 5 and 4 years and were 41.8808-49.1060 mg/kg and 22.8544-41.6616 mg/kg whereas the concentrations of Zn in the organic agricultural land of aged 5 and 4 years were 62.9273-73.3729 mg/kg and 58.0970-73.9987 mg/kg respectively. The speciation of Cu obtained in in the organic agricultural land of aged 5 and 4 years was ranged from 6-17% and 3-14% in the EFLE fraction, from 9 to 37% and 6 to 24% in the Fe/Mn oxides fraction, and ranged from 27 to 53% and 41 to 69% in the resistant fraction (non bioavailable). The Zn speciation found in the organic agricultural land of aged 5 and 4 years was ranged from 6 to 9% and 7 to 10% the EFLE fraction (bioavailable), from 15 to 22% and 11 to 25% in the Fe/Mn oxides and organic (potentially bioavailable) fractions and ranged from 46 to58% and 40 to 53% in the silicate fraction (non bioavailable).

KANDUNGAN LOGAM BERAT TOTAL Pb DAN Cd DALAM SEDIMEN DAN BUAH PEDADA (Sonneratia alba) DI MUARA SUNGAI BADUNG N. K.D.S. Widari; I M. Siaka; I. E. Suprihatin
Jurnal Kimia (Journal of Chemistry) Vol.13 No.1 Januari 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This paper discusses the total contents of Pb and Cd metals in sediment and pedada fruit (Sonneratia alba) collected from Estuary of Badung River. Wet digestion method using reverse aqua regia was performed to extract the metals. All metals were measured using Atomic Absorption Spectrophotometer (AAS). The results showed that the total contents of Pb and Cd in the sediments were 288.0131-376.0544 and 1.4849-7.0230 mg/kg, respectively, while in the pedada fruit were 160.0212-245.4012 and 3.8151-14.6917 mg/kg, respectively. Based on the results, the content of Pd and Cd in the sediment and pedada fruit in the area of Badung River Estuary exceeded the limits allowed indicating that the sediment and the pidada fruts are polluted by Pb and Cd metals

SPESIASI DAN BIOAVAILABILITAS Pb DAN Cu DALAM TANAH PERTANIAN ORGANIK DI BEDUGUL SERTA KANDUNGAN LOGAM TOTALNYA DALAM SAYUR BROKOLI I M. Siaka; H. Nurcahyani; I B. P. Manuaba
Jurnal Kimia (Journal of Chemistry) Vol.13 No.2 Juli 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Bedugul area is a vegetable producing center in Bali that also develops organic farming. This study aimed to determine the bioavailability of Pb and Cu in an organic farm in Bedugul and the content of both metals in broccoli before planting and at harvest. Metal extraction was carried out through wet digestion and its bioavailability was determined by the application of the sequential extraction methods. The measurement of the two metals was accomplished by using AAS. The total Pb content in the organic soils before and after harvesting were found to be 746.102-897.3754 mg/kg and 277.778-328.88217 mg/kg, while Cu were of 93.1212-11-114.3259 mg/kg, and 48,608-92.3708 mg/kg, respectively. The bioavailability of Pb and Cu in soils before planting was different from that of at harvest. Pb metal in organic soil before planting which were readily bioavailable, bioavailable, and nonbioavailable were were found to be (17.80-21.62)%, (44.07-47.65)%, and (30.73-36, 89 )%, while Cu were of (5.02-7.89)%, (55.73-60.57)%, and (32.81-39.25)%, respectively. The total Pb and Cu contents in broccoli were of (27,2968-30,3621) mg/kg and (27,0303-30,0223) mg/kg, respectively. Keywords: bioavailability, broccoli, organic agriculture soil, Pb and Cu, speciation

SPESIASI DAN BIOAVAILABILITAS LOGAM BERAT Pb DAN Cu DALAM TANAH PERTANIAN DI DESA SUKAWANA, KINTAMANI K. A. P. D. Putra; I M. Siaka; I. E. Suprihatin; K. Wardani
Jurnal Kimia (Journal of Chemistry) Vol. 16, No.1, Januari 2022
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2022.v16.i01.p09

Tanah pertanian yang sering diberi pupuk anorganik maupun organik cenderung tercemar oleh logam berat yang terkandung dalam pupuk tersebut. Logam berat dalam tanah, terutama yang bersifat bioavailable dapat terserap dan masuk ke bagian tanaman yang tumbuh di tanah tersebut. Penelitian ini bertujuan untuk menentukan kandungan logam Pb dan Cu total serta bioavailabilitas kedua logam tersebut dalam tanah pertanian untuk berbagai jenis sayuran di Desa Sukawana, Kintamani, Bali-Indonesia. Metode ekstraksi bertahap digunakan untuk melakukan spesiasi Cu dan Pb dan teknik Atomic Absorption Spectrometry digunakan untuk pengukuran absorbansi kedua logam. Hasil penelitian menunjukkan bahwa kandungan logam Pb dan Cu total dalam sampel tanah pertanian berturut-turut (40,3607-167,4051) mg/kg dan (26,7679-35,7764) mg/kg. Hasil spesiasi menunjukkan bahwa fraksi labil (F1) paling rendah untuk kedua logam, fraksi reducable (F2) lebih kecil dari fraksi oxidicable (F3) baik untuk logam Pb maupun Cu, sedangkan fraksi terbesar adalah fraksi inert (F4) untuk Pb dan fraksi oxidicable (F3) untuk Cu dengan kata lain: F4>F3>F2>F1 untuk Pb dan F3>F2>F4>F1 untuk Cu. Logam Pb dan Cu yang bioavailable (F1) jauh lebih kecil dibandingkan dengan jumlah logam yang berpotensi bioavailable (F2 dan F3). Persentase logam Pb dan Cu yang berpotensi bioavailable berturut-turut berkisar antara (47,57-53,38)% dan (88,29-95,70)%. Persentase logam Pb dan Cu yang rendah pada fraksi bioavailable mengindikasikan bahwa sayuran yang ditanam di area tanah pertanian tersebut aman dari cemaran kedua logam. Kata kunci: bioavailabilitas, Cu, Pb, spesiasi Agricultural soils which are frequently given inorganic or organic fertilizers tend to be polluted by heavy metals contained in the fertilizers. Heavy metals in the soil, especially those being bioavailable, can be absorbed and enter all the parts of the plant growing on the soil. This study aimed to determine the total contents of Pb and Cu as well as the bioavailability of the metals in agricultural soil used for vegetables cultivating in Sukawana Village, Kintamani, Bali-Indonesia. The sequential extraction method was used to perform the speciation of Cu and Pb and the Atomic Absorption Spectrometric technique was used to measure the two metals. The results showed that the total metal contents of Pb and Cu in agricultural soil samples were (40.3607-167.4051) mg/kg and (26.7679-35.7764) mg/kg, respectively. The speciation results showed that the labile fraction (F1) was the lowest for both metals, the reducable fraction (F2) was smaller than the oxidicable fraction (F3) for both Pb and Cu, while the largest fraction was the inert fraction (F4) for Pb and the oxidicable fraction (F3) for Cu, in other words: F4>F3>F2>F1 for Pb and F3>F2>F4>F1 for Cu. The bioavailable Pb and Cu (F1) were much smaller than the amount of metals being potentially bioavailable (F2 and F3). The percentages of potentially bioavailable Pb and Cu metals ranged from (47.57-53.38)% and (88.29-95.70)%, respectively. The low percentage of Pb and Cu in the bioavailable fraction indicated that vegetables planted in the agricultural land area were safe from contamination of both metals. Keywords: bioavailability, Cu, Pb, speciation

BIOAVAILABILITAS DAN SPESIASI LOGAM BERAT Pb DAN Cd PADA TANAH PERTANIAN BASAH DAN KERING DI DAERAH DENPASAR I Made Siaka; Emmy Sahara; Gusti Agung Putu Merta Dharmayoga
Jurnal Kimia (Journal of Chemistry) Vol. 9, no. 1 Januari 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A research on the bioavailability and speciation of Pb and Cd in wet and dry soils in some agricultural areas in Denpasar has been carried out. Samples were taken from agricultural land in Peguyangan and Kesiman areas. This study was aimed to determine the total metal concentrations and the fractions of the species of Pb and Cd, as well as the level of the metal bioavailabilities. The study included the determination of the total Pb and Cd concentrations in the samples and extraction of the metal through the application of the sequential extraction technique followed by measurement of the metal with the Atomic Absorption Spectrophotometer. The result showed that generally the concentrations of Pb and Cd total in the wet soil from the two sampling areas were higer than those of the dry soil which were varied between 14,0484-16,1072 mg/kg and 1,5983-1,9885 mg/kg respectily.the results for Pb speciation in wet and dry soils from both locations as follows : the bioavailable fraction (EFLE fraction) and potentially bioavailable (consisting of Fe/Mn oxides and organic-sulfide fractions) were of 29,81%-83,66% and 2,44%-13,96 %, respectily, while the resistant (non-bioavailable) fraction were of 28,55%-55,11%. The results for Cd speciation in wet and dry soils from both locations were as follows : the bioavailable an potentially bioavailable fractions were of 28,62%-67,87% and 7,63%-48,39%, repectily, while the resistant (non-bioavailable) fractions were of 10,68%-30,92%.

DISTRIBUSI LOGAM BERAT Pb DAN Cu PADA AIR LAUT, SEDIMEN, DAN RUMPUT LAUT DI PERAIRAN PANTAI PANDAWA I Made Siaka; I Gusti Ayu Made Dwi Adhi Suastuti; I Putu Bagus Mahendra
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 2 Juli 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Penelitian mengenai distribusi logam berat Pb dan Cu dalam air laut, sedimen, dan rumput laut di perairan Pantai Pandawa telah dilakukan. Penelitian ini bertujuan untuk mengetahui kandungan total logam berat Pb dan Cu serta distribusinya di perairan Pantai Pandawa. Preparasi pada sampel sedimen dan rumput laut menggunakan metode digesti dengan larutan reverse aqua regia dengan bantuan ultrasonic bath pada suhu 60oC selama 45 menit dan dipanaskan dengan hot plate pada suhu 140oC selama 45 menit. Analisis logam berat Pb dan Cu menggunakan spektrofotometri serapan atom. Hasil analisis terhadap logam berat Pb menunjukan distribusi logam berat Pb dalam air laut, sedimen, dan rumput laut dari masing-masing lokasi pengambilan sampel di perairan Pantai Pandawa berkisar antara 0,8479 sampai 1,9070 mg/L untuk air laut; 17,0833 sampai 76,25 mg/kg untuk sedimen; dan 13,2749 sampai 51,3252 mg/kg untuk rumput laut. Hasil analisis terhadap logam berat Cu menunjukan distribusi logam berat Cu dalam air laut, sedimen, dan rumput laut dari masing-masing lokasi pengambilan sampel di perairan Pantai Pandawa berkisar 0,0015 sampai 0,0054 mg/L untuk air laut; 0,6699 sampai 1,4554 mg/kg untuk sedimen; dan 0,0623 sampai 0,2233 mg/kg untuk rumput laut. penyebaran dari logam berat Pb dan Cu di perairan Pantai Pandawa menujukan kandungan logam berat Pb dan Cu lebih banyak berada pada sedimen dari pada air laut dan rumput laut. Logam berat Pb dan Cu cenderung terdistribusi lebih banyak pada lokasi yang memiliki intensitas aktivitas yang lebih banyak di perairan Pantai Pandawa.

SPESIASI DAN BIOAVAILABILITAS LOGAM BERAT Cu DAN Zn DALAM TANAH PERTANIAN ORGANIK DAN ANORGANIK N. W. B. S. Devi; I M. Siaka; K. G. D. Putra
Jurnal Kimia (Journal of Chemistry) Vol.13 No.2 Juli 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Agriculture in Indonesia generaly applies agrochemical to improve the quality and quantity of the products, but the impact is, both lands and their products could be contaminated by pollutans especially heavy metals. This study aimed to determine the total metals, speciation, and bioavailability of Cu and Zn in organic and inorganic agricultural soils in Blahbatuh District, Gianyar Regency. The sequential extraction method was performed to release the bonds of heavy metals in each soil component and the determination of the metal concentration was carried out using AAS. The total metals of Cu and Zn in both organic and inorganic soils indicated that both type of soils were still classified as uncontaminated soils because the metal contents were below the maximum limit allowed. The total contents of Cu and Zn in the organic soil were of 45.3922 mg/kg and 47.7645 mg/kg, respectively, while Cu and Zn in the inorganic soil were 48.9121 mg/kg ??and 49.9474 mg/kg, respectively. Fractination in the organic and inorganic soil EFLE (easly, freely,leachable, and exchangeable), reducible, oxidisable, dan resistant including F4> F3> F2> F1 for Cu and F4> F3> F1> F2 for Zn. The bioavailability of Cu and Zn in the organic soils were 10.52-23.79% and 3.79-7.21% bioavailable, 10.03-25.50% and 14.99-32.68% potentially bioavailable, 38.64-63.19% and 41.20- 60.28% non bioavailable, while in the inorganic soil and were 18.31-32.63% and 4.54-7.85% bioavailable, 9.86-13.85% and 15.26-32.55% potentially bioavailable, and 40.20-59.14% and 42.84-58.26% non bioavailable. Consuquenthy, both types of the agricultural soils would be safe for planting various types of rice. Keywords: bioavailability, Cu and Zn, speciation, agricultural soil

BIODEGRADASI REMAZOL BRILIANT BLUE DALAM SISTEM BIOFILTRASI VERTIKAL DENGAN INOKULUM BAKTERI DARI SEDIMEN SUNGAI MATI IMAM BONJOL DENPASAR Luh Putri Kriswidatari; I W Budiarsa Suyasa; I Made Siaka
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 11 No 1 (2017)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2017.v11.i01.p02

BIODEGRADATION REMAZOL BRILLIANT BLUE IN VERTICAL FILTRATION SYSTEM WITH INOKULUM BACTERIA FROM DIED SEDIMEN RIVER IMAM BONJOL DENPASARThe biodegradation research of Remazol Brilliant Blue (RBB) has been done in vertical biofiltration systems with bacterial inoculum that had seed from soil Mati River Imam Bonjol Denpasar. This aims of research are to obtain the best active suspension grown from soil samples of Mati river sediment and to determine the magnitude of the effectiveness and capacity of biosystem . The artificial waste water of RBB has made with a concentration of 200 mg/L. In the first phase, the best active suspension is obtained by determining the value of VSS ( Volatile Suspended Solid ) is the highest as a source of inoculum of bacteria capable of degrading RBB. While the second phase, the effectiveness and capacity of biosystem is obtained by determining the levels of waste of artificial RBB vertical biofiltration system (biosystem). Biofilm has made with attached bacteria consortium in volcanic rock for 7 days. RBB subsequently incoporated into it to determine the concentration of it and to determine the effectiveness and capacity and identified the bacteria contained in biosystem. The results showed the best sludge active from soil sediments of the Mati River Imam Bonjol Gang Keladian with a value of Volatile Suspended Solid (VSS) highest of 17200 mg/L when the sreeding time of 48 hours. The results of processing using biosystem known to decreased when the processing time from 6 hours up to 114 hours, from concentration of 200 mg/L to 19.6211 mg/L. Then the prosses has increased again into 19.8209 mg/L at the time to 120 hours. The highest effectivity of biosystem to degrading remazol brilliant blue of 90.19 % for 114 hours , while the highest capacity is obtained from the biosystem is 1.6525 x mg /g for 114 hours. The bacteria that act to decreased identified as Pseudomonas sp., Aeromonas sp . and Plesiomonas sp, with Pseudomonas sp more dominant in the degrading of dye RBB. The value of the colonists before degradation of 7.2 x CFU/gr and the value after the degradation of 2.6 x CFU/gr.

The use of Agrochemicals for inc BIOAVAILABILITY OF HEAVY METALS Pb AND Cd IN LAND FOR CULTIVATYING CABBAGE IN KINTAMANI AREA BANGLI regi mahendra; I Made Siaka; Iryanti Eka Suprihatin
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 12 No 1 (2018)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

The use of Agrochemicals for increasing the agricultural products are commonly applied on agricultural soils, especially the soil used for cultivatif cabbage in the area of Kintamani-Bangli, Province of Bali. Agricultural soils used for cultivatif cabbage in Kintamani area commonly apply inorganic fertilizers and synthetic pesticides for increasing the products. However the use of these agrochemicals tends to uncontrol and causes the soils polluted. One factor of contamination of soil is the presence of heavy metals in the soil. Intensive use of inorganic fertilizers and synthetic pesticides can lead to high levels of bioavailability of heavy metals in plants. This study intend to determine the total contents of heavy metals Pb and Cd in the agricultural soils and analyse bioavilability of those metals. The total metals was determined by the use of digestion method involving reverse aquaregia (HNO3:HCl, 3:1) and the bioavailability of the metals was determined by applying single extraction including HCl and EDTA extractions. The results show that the total contents of Pb and Cd in the soils were 4,1261 ± 0,1113 – 14,5923 ± 0,3790 mg/kg and 0,8803 ± 0,0259 - 0,9425 ± 0,0195 mg/kg respectively. The bioavailable metals of Pb and Cd in the soils was 31,14% - 42,53% and 78,70% - 80,73%, respectively.

Co-Authors A. A. Bawa Putra Dwinda Safitri Emmy Sahara Gusti Agung Putu Merta Dharmayoga H. Nurcahyani I B. P. Manuaba I Made Oka Adi Parwata I Made Sutha Negara I Putu Bagus Mahendra I Putu Meda Parmiko I Putu Ngurah Apri Susilawan I W BUDIARSA SUYASA I Wayan Suarsa I. A. Gede Widihati I. G. Eka Saputra Jaya Iryanti Eka Suprihatin K. A. P. D. Putra K. G. D. Putra K. Wardani Luh Putri Kriswidatari N. K.D.S. Widari N. W. B. S. Devi Nanik Wijayanti Ni Desak Komang Ayu Hartani Ni G. A. M. Dwi Adhi Suastuti Ni Made Dwita Prasetyawati Ni Putu Diana Febriyanti Ni Putu Diantariani Oka Ratnayani P. A. Rupadewi P. Suarya Putu Desitha Pratiti Kameswari Wisnawa Putu Dona Oka Putri Putu Suarya regi mahendra Tri Rahayu WIWIK SUSANAH RITA Yuky Astary Hermanto

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