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Isra' Suryati
Universitas Sumatera Utara
Engineering Environmental Science

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Analisis Sebaran Total Suspended Particulate (TSP) Dengan Model Gaussian Point Source Di Pembangkit Listrik Berbahan Bakar Biomassa Shindy Zellia; Ivan Indrawan; Lies Setyowati; Muhammad Faisal; Isra' Suryati
Jurnal Dampak Vol 15, No 2 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.15.2.82-87.2018

Abstract

The study aims to analyze the concentration of TSP generated from the smokestacks of biomass fuelled power plant with 2 x 15 MW  capacity along with the pattern of distribution in the ambient air around the plant. The field observation conducted in Jl. K. L. Yos Sudarso KM 10.5 by making five (5) ambient air sample point, the point I is located around 130 m south, the point II within 220 m south, point III around 110 m east, point IV around 325 m north and point V around 100 m west from sources emissions. The sample is taken for 3 (three) days, i.e in the morning, afternoon and evening. Maximum TSP concentration was measured at point III at 50,93 μg/m3. Meanwhile, according to Gaussian Point Source model, the maximum TSP concentration at point I is around 1,79 μg/m3. The concentration of TSP is still below the ambient air quality standard. Furthermore, the measured TSP concentration and TSP modeling were mapped with the Surfer program version 11.0. Based on the results, the measured TSP concentration mapping indicates that the highest affected area is located at the eastern region of the emission source. Moreover, Mapping of TSP concentration models show that the highest affected area is located at the southern part of the emission source.
Studi Kandungan Logam Berat (As, Cd, Cr, Pb Dan Hg) dalam Particulate Matter 10 Mikron (PM10) di Beberapa Ruas Jalan Kota Medan Isra' Suryati; M Nasri Akbar; Nurrakhmah Latifah
Jurnal Dampak Vol 16, No 2 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.16.2.77-85.2019

Abstract

The increase in population is directly proportional to the increase in transportation facilities. Medan city as one of the metropolitan cities also experienced an increase in the number of vehicles ± 0.6% / year. Motorized vehicles are one source of emissions in reducing urban air quality. One parameter that has a direct impact on health is particulate matter of 10 microns (PM10). This study aims to analyze the content of heavy metals (As, Cd, Cr, Hg and Pb) in PM10 from direct measurements on SM Raja Street, Balai Kota Street and Pinang Baris Street. Analysis of heavy metal content in PM10 is carried out by Inductively Coupled Plasma (ICP). Based on the observation of traffic volume in these 3 (three) roads, the highest number of vehicles is on SM Raja Street which is 8,417 units/hour (morning) and 10,043 units/hour (afternoon). The high number of vehicles on SM Raja Street because this road is a cross-province road. PM10 measurement results are 271,505 μg/Nm3 on SM Raja Street, 92,75 μg/Nm3 at Pinang Baris Street and 85,035 μg/Nm3 at Balai Kota Street. When compared with the national ambient air quality standard (150 μg / Nm3) which exceeds the quality standard is SM Raja Street. The content of some heavy metals in PM10 on several roads in Medan City for As parameters (0.57 - 1.80 μg/Nm3), Cd (1.97 - 3.63 μg/Nm3), Cr (0.08 - 0, 15 μg/Nm3), Hg (0.57 - 0.99 μg/Nm3) and Pb (0.45 - 0.63 μg/Nm3). One way to reduce heavy metal content in PM10 is to increase the area of green open space in Medan City.Keywords: Heavy metals, PM10, area of green, transportation ABSTRAKPeningkatan populasi berbanding lurus dengan peningkatan fasilitas transportasi. Kota Medan sebagai salah satu kota metropolitan juga mengalami peningkatan jumlah kendaraan ± 0,6% / tahun. Kendaraan bermotor adalah salah satu sumber emisi dalam mengurangi kualitas udara perkotaan. Salah satu parameter yang memiliki dampak langsung terhadap kesehatan adalah partikel 10 mikron (PM10). Penelitian ini bertujuan untuk menganalisis kandungan logam berat (As, Cd, Cr, Hg dan Pb) di PM10 dari pengukuran langsung di Jalan SM Raja, Jalan Balai Kota dan Jalan Pinang Baris. Analisis kandungan logam berat dalam PM10 dilakukan oleh Inductively Coupled Plasma (ICP). Berdasarkan pengamatan volume lalu lintas di 3 (tiga) jalan ini, jumlah kendaraan tertinggi adalah di Jalan SM Raja yaitu 8.417 unit / jam (pagi) dan 10.043 unit / jam (sore). Tingginya jumlah kendaraan di Jalan SM Raja karena jalan ini merupakan jalan lintas provinsi. Hasil pengukuran PM10 adalah 271.505 μg / Nm3 di Jalan SM Raja, 92,75 μg / Nm3 di Jalan Pinang Baris dan 85.035 μg / Nm3 di Jalan Balai Kota. Jika dibandingkan dengan standar kualitas udara ambien nasional (150 μg / Nm3) yang melebihi standar kualitas adalah Jalan SM Raja. Kandungan beberapa logam berat dalam PM10 pada beberapa jalan di Kota Medan untuk parameter As (0,57 - 1,80 μg / Nm3), Cd (1,97 - 3,63 μg / Nm3), Cr (0,08 - 0, 15 μg / Nm3), Hg ( 0,57 - 0,99 μg / Nm3) dan Pb (0,45 - 0,63 μg / Nm3). Salah satu cara untuk mengurangi kandungan logam berat di PM10 adalah dengan meningkatkan area ruang terbuka hijau di Kota Medan.Kata Kunci: logam berat, PM10, terbuka hijau, transportasi
Pengaruh Kecepatan Angin, Kelembapan dan Suhu Udara terhadap konsentrasi SO2 Ambien dan Pemetaan SO2 Amben di Sekitar PT. Kawasan Industri Medan Chandra Iramawati; Muhammad Turmuzi; Isra' Suryati; Lies Setyowati; Eka Lestari Mahyuni
Jurnal Dampak Vol 15, No 2 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.15.2.72-76.2018

Abstract

This study aims to determine the effect of wind speed, humidity and air temperature on the concentration of SO2 in ambient air around PT. Medan Industrial Area (KIM) and to find out the description of SO2 concentration mapping around KIM. This study was limited to KIM Phase I and II and sampling was carried out at 6 (six) points. The results obtained were the lowest SO2 concentration of 58.63 µg / m3 and the highest concentration was 112.91 µg / m3. Based on the linear regression test, the result is that the higher the wind speed, the concentration of SO2 in the area around KIM is lower and 15.1% SO2 concentration is influenced by wind speed. The higher the humidity of the air, the concentration of SO2 in the area around KIM is lower and 26% of the concentration of SO2 is influenced by humidity. The higher the air temperature, the higher the concentration of SO2 in the area around the KIM and 68.5% the concentration of SO2 is influenced by air temperature. Based on the results of mapping using the Surfer 11 version, the results obtained in the morning the highest SO2 concentration was in the southern part of KIM and the lowest SO2 concentration was in the northwestern part of KIM. During the day, the highest SO2 concentration was in the eastern part of the KIM and the lowest SO2 concentration was in the northwestern part of KIM.
Co-Authors Chandra Iramawati Eka Lestari Mahyuni Ivan Indrawan Lies Setyowati M Nasri Akbar Muhammad Faisal Muhammad Turmuzi Nurrakhmah Latifah Shindy Zellia