Komposisi Mangrove pada Lahan Tercemar BTEX dan Logam Berat

Abstract

The study was aimed to gasp inventory an expired plant mangrove species characteristic respectively collection specimen land us function BTEX and heavy metal at growth environment. The study held from April through November 2007. Design with two classes, Rank I : survey activities and explored in land for quantity and identification, Rank II : Analysis totality solid matter petroleum level BTEX and heavy metal situ by research in location. The results of mangrove identification (main component, supporting component, and associated mangrove) showed there are 11 families and 25 species. BTEX parameter from soil sample was detected benzene intensive contamination on Andil river (16.30 ppm), Porangan river (81.30 ppm), Gombal river (56.90 ppm), Kacar river (36.90 ppm) but it was not detected on Krondo river. Toluene intensive contamination Porangan river (824 ppm) and Kacar river (896 ppm). BTEX parameter from water sample was detected benzene intensive contamination on Andil river (24.30 ppm), Porangan river (8.13 ppm), Gombal river (20.30 ppm), Kacar river (8.13 ppm), Krondo river (8.13 ppm), and Toluene contaminate slightly. Ethylbenzene and xilene were not detected by gas chromatography. Soil medium showed that contamination mainly Pb on Gombal river (5.98 mg/Kg), Kacar river (7.24 mg/Kg) and Krondo river (6.43 mg/Kg), where are Andil river and Porangan river were only slightly contaminated. The metal occurred on Cu for all, except Andil river (6.22 mg/Kg), whereas Zn and Cr did not contaminate, while Ag and Cd were not detected. Water medium was not contaminated by Pb, Cd, Cr, and Zn, furthermore Ag and Cu were not detected.

Struktur dan komposisi jenis mangrove Desa Bonea dan Kodiri, Kabupaten Muna, Sulawesi Tenggara

“…Gambar 3 Kerapatan jenis dan penutupan relatif spesies mangrove di Desa Bonea, Kecamatan Lasalepa, Kabupaten Muna, Sulawesi Tenggara Menurut Chapman, jenis vegetasi mangrove famili Rhizoporaceae dicirikan substrat tanah (sedimen) dengan kesuburan tinggi yang telah terbentuk lama (Indawan, et al, 2012). Hal yang sama ditemukan di Golo Sepang, Kecamatan Boleng, Kabupaten Manggarai Barat.…”

Health risk analysis of benzene, toluene, ethylbenzene, and xylene (BTEX) in groundwater in Yogyakarta City, Indonesia

“…Despite the high possibility of occurrence and potential adverse health effects it can pose, health risk analysis of exposure of BTEX from gas stations to humans is still rarely conducted. Most studies focused on the monitoring of groundwater quality surrounding the source of BTEX contamination or modeling or simulating its transport in the environment [8][9][10]. Health risk analysis can be used to estimate the potential health impact that occurred due to BTEX exposure from the environment.…”

Struktur komunitas mangrove di perairan pantai Desa Sehati Kabupaten Maluku Tengah

“…Keywords: community structure, mangrove, physic and chemist factor, transect method PENDAHULUAN Mangrove merupakan komunitas tumbuhan pantai yang mampu beradaptasi pada lingkungan ekstrim. Komunitas mangrove tumbuh pada habitat dengan substrat pasir, lumpur dan berbatu pada zona intertidal (Kustianti, 2011;Indawan et al, 2012), substrat yang rendah oksigen, serta perairan yang memiliki kadar garam. Sistem perakaran yang unik dengan adanya struktur lenticel dan pneumatophore, memberikan kemampuan adaptasi mangrove terhadap rendahnya oksigen untuk respirasi dalam substrat, Selain itu mangrove dapat meregulasi kadar garam pada perairan secara fisiologis untuk memperoleh air yang digunakan dalam metabolisme tubuh.…”