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Pengaruh Polusi Udara terhadap Deposisi Asam di Daerah Sekitar Pantai Tanti, Dyah Aries; Rachman, Arif; Taopik, Opik; Indrawati, Asri; Setyawati, Wiwiek; Triani, Listi Restu; Sari, Wilin Julian
Jurnal Teknologi Lingkungan Vol. 26 No. 1 (2025)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2025.4902

Abstract

Acid deposition resulting from air pollution has various negative impacts and has emerged as a global issue, leading to human health problems. The primary causes of acid deposition are pollutants originating from both natural and anthropogenic sources. This study aimed to identify the chemical composition characteristics related to acid deposition in coastal areas, encompassing both wet and dry deposition. Sampling took place in Pameungpeuk, Garut Regency, from 2012 to 2018. The wet deposition was monitored by collecting rainwater samples using rain gauges, while dry deposition was assessed through passive sampler methods in ambient air. Laboratory analysis revealed that Na+ and Cl- ions were highly dominant in rainwater, with average concentrations of 200.70 µmol/L and 181.29 µmol/L, respectively. Regarding ambient air measurements, the average concentration of O3 was the highest among other parameters, at 18.88 µg/m3. The concentrations of dissolved ions and ambient air are significantly influenced by rainfall, acting as a diluent in the atmosphere.   ABSTRAK Deposisi asam sebagai akibat dari polusi udara memberikan dampak negatif yang luas dan telah menjadi permasalahan global dan menyebabkan gangguan kesehatan manusia. Penyebab utama deposisi asam adalah polutan yang dihasilkan dari sumber alami dan juga antropogenik. Penelitian ini dilakukan untuk mengetahui karakteristik komposisi kimia dalam kaitannya dengan deposisi asam di daerah pantai baik secara basah maupun kering. Sampling dilakukan di Pameungpeuk, Kabupaten Garut dari tahun 2012-2018. Pemantauan deposisi basah dengan melakukan pengukuran pada sampel air hujan yang ditampung dengan penakar air hujan, sedangkan deposisi kering dengan menggunakan metode passive sampler pada udara ambien. Dari hasil analisis di laboratorium menunjukkan bahwa ion Na+ dan Cl- keberadaannya sangat dominan pada air hujan, dengan konsentrasi rata-rata ion Cl- sebesar 200,70 µmol/L dan ion Na+ 181,29 µmol/L. Hasil pengukuran udara ambien, konsentrasi rata-rata O3 paling tinggi di antara parameter lainnya yaitu sebesar 18,88 µg/m3. Tinggi rendahnya konsentrasi dari ion terlarut dan udara ambien sangat dipengaruhi oleh curah hujan yang berperan sebagai pengencer di atmosfer.
EFFECT OF RAINFALL ON THE CHEMICAL COMPOSITION OF RAINWATER IN MONITORING ACID DEPOSITION IN GREATER BANDUNG Rievaldo , Dandy; Chandra, Indra; Setyawati, Wiwiek; Indrawati, Asri; Aries Tanti, Dyah; Ramadhan, Ardiansyah; Rizqi Mubarok, Lutfhi; Rahmi Rasyid, Tazlila; Aziz, Azrina Abd; Burhanudin, Zainal Arid
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 1, APRIL 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i1.14051

Abstract

Aim: The study aimed to investigate the impact of rainwater on the acidity levelsto monitor acid deposition and identify sources of pollutant that affect the acidity concentrations of rainwater. Methodology and Results: One unit of rainwater sampler in each location was employed, andsamples were taken to the National Research and Innovation Agency laboratory (BRIN) for analysis of rainwater quality including acidity/pH degree, conductivity, and ion concentrations. The results show that high rainfall intensity (>300 mm/month) in April and December 2019 led to a decrease in electrical conductivity (<10 mS/cm) and ion compounds (>200 μmol/L) of rainwater, likely due to the dissolution/washing process of anions in the air during the rainy season and acid and alkaline neutralization in the dry season. The most identified chemical compounds were ammonium (NH4+), sulfate (SO42-), nitrate (NO3-), and salt (NaCl). Conclusion, significance, and impact study: Based on back-trajectory projections, the decline in rainwater quality was attributed to both local emissions (transportation, industry, agriculture, and waste burning) and long-range sources (earth crust, oceans, coastlines, marine activities, and anthropogenic and forest fires in the Australian territory).