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All Journal LenteraBio Jurnal Biologi Tropis ALSYS : Jurnal Keislaman dan Ilmu Pendidikan
OKTAVIANI, RISKA
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Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences Other

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POTENSI PISTIA STRATIOTES DAN SPIROGYRA SEBAGAI AGEN FITOREMIDIASI LOGAM BERAT TIMBAL (PB) PADA PERAIRAN OKTAVIANI, RISKA
LenteraBio: Berkala Ilmiah Biologi Vol 3, No 3 (2014):
Publisher : Universitas Negeri Surabaya

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Abstract

Penelitian ini bertujuan untuk mendeskripsikan potensi Spirogyra dan Pistia stratiotes terhadap tingkat penyerapan logam berat timbal oleh biota, penurunan kadar logam berat timbal pada media, dan pertumbuhan biota setelah pemberian logam berat timbal pada media tanam. Rancangan penelitian ini adalah Rancangan Acak Kelompok (RAK) dengan 2 faktor perlakuan, biota yang digunakan baik perlakuan tunggal maupun kombinasi diletakkan pada media tanam yang telah diberi perlakuan logam timbal selama 10 hari. Data yang berupa perbedaan biomassa biota pada awal dan akhir perlakuan, penurunan kadar logam berat timbal pada media tanam, dan kadar logam berat timbal yang terserap oleh biota dianalisis dengan menggunakan anava dua arah dan BNT pada taraf uji 5%. Hasil penelitian menunjukkan bahwa penyerapan kadar logam berat timbal tertinggi terdapat pada perlakuan kombinasi Spirogyra dan Pistia stratiotes dengan konsentrasi logam berat timbal pada media tanam yaitu 5 ppm. Penurunan kadar logam berat timbal tertinggi pada media tanam terdapat pada perlakuan dengan penggunaan logam berat timbal dengan konsentrasi 5ppm. Pertumbuhan biota paling optimal terdapat pada perlakuan kombinasi Spirogyra dan Pistia stratiotes pada konsentrasi 5 ppm.   Kata kunci: fitoremidiasi; Spirogyra; Pistia stratiotes; logam berat timbal
Analisis Kesalahan Ejaan pada Penelitian Karya Ilmiah Mahasiswa Oktaviani, Riska; Ramdhani, Intan Sari
ALSYS Vol 2 No 6 (2022): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/alsys.v2i6.653

Abstract

The purpose of the study was to describe the use of punctuation in scientific works of students of the Language Education Study Program and Indonesian Literature, Muhammadiyah University, Tangerang. The research carried out is qualitative descriptive research. The object of research is a student's scientific work Indonesian Language and Literature Study Program semester VI with data and sources data in the form of research paper assignments. Data collection using studies documentary. The data analysis technique used is descriptive qualitative. Results research shows errors contained in student paper research in the form of using the wrong punctuation to cause ambiguous sentences.
Growth Respone of Bara Variety (Capsicum Frustencens) to Heavy Metal Stress of Cadmium Sulfate (CdSO4) Oktaviani, Riska; Mukarlina; Linda, Riza
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6216

Abstract

Cadmium is a non-essential heavy metal that is toxic to plants. This study aims to determine the growth response of cayenne pepper var bara plants on planting media treated with different concentrations of cadmium sulfate heavy metal stress (CdSO4). This research was conducted at the Biology Laboratory of the Department of Biology, Faculty of Mathematics and Natural Sciences, Tanjungpura University Pontianak, Chlorophyll Test was conducted at the Integrated Biology Laboratory UPT, Tanjungpura University Pontianak, and soil analysis tests were conducted at the Chemistry and Soil Fertility Laboratory, Faculty of Agriculture, Tanjungpura University, Pontianak. This study used a completely randomized design (CRD) with 4 treatment levels of cadmium sulfate concentration, namely control (0 ppm), 80 ppm, 120 ppm, and 160 ppm. Data were analyzed using one-way Anova followed by Duncan test with 95% confidence level. The results showed that the administration of heavy metal cadmium sulfate (CdSO4) at the lowest concentration of 80 ppm had a significant effect on the growth of cayenne pepper var bara, namely leaf area, dry weight and chlorophyll content, while the 120 and 160 concentration treatments had a significant effect on the growth of cayenne pepper var bara plants, namely plant height, and wet weight.
Co-Authors Ari Hepi Yanti Ramdhani, Intan Sari Riza Linda