สืบค้นงานวิจัย
Effect of Dissolved Organic Carbon (DOC) on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River, Cambodia
Chuleemas Boonthai Iwai - มหาวิทยาลัยขอนแก่น
ชื่อเรื่อง (EN): Effect of Dissolved Organic Carbon (DOC) on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River, Cambodia
ผู้แต่ง / หัวหน้าโครงการ (EN): Chuleemas Boonthai Iwai
หน่วยงานสังกัดผู้แต่ง:
  1. มหาวิทยาลัยขอนแก่น
บทคัดย่อ (EN): The aquatic resources of the Mekong River are importance to supporting the livelihoods of a large percentage of 60 million who live along the Lower Mekong Basin. Ecotoxicology of copper on tropical freshwater biota was studied using field-collected water from 2 local sites along Lower Mekong Basin in Cambodia, which had two different water dissolved organic carbon (5.74 mg/L DOC and 1.12 mg/L DOC). In this study, US EPA method was used for the acute toxicity with two different water DOC on Chironomid (Chironomus javanus) and fish Nile tilapia (Oreochromis niloticus) to modify the effecting of dissolved organic carbon (DOC) on copper toxicity. The result showed that the LC50 with 95% confidence limit obtained were 742 µg/L in Chironomid and 853µg/L in Nile tilapia with high (5.74 mg/L DOC), respectively. In term of low (1.12 mg/L DOC) test water, the LC50 with 95% confidence limit obtained were 707µg/L in Chironomid and 397µg/L in Nile tilapia, respectively. The mortalities for both species increased with increasing copper concentration and the LC50 values decreased, indicating more toxicity on Nile tilapia and Chironomid. This gave an order of toxicity of copper in water with low DOC > water with high DOC at the 96hr LC50. DOC appears to provide protection against Cu toxicity in the freshwater by complexing between free copper and DOC. The present study indicated that water chemistry parameters can influence copper toxicity to tropical freshwater biota. Exposure of the test species to this series of laboratory experiments has provided useful data for determine the risk of copper in Mekong river water.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): th
จำนวนหน้า: 7
เอกสารแนบ: https://ag2.kku.ac.th/kaj/PDF.cfm?filename=P102 Soi052.pdf&id=2482&keeptrack=4
เผยแพร่โดย: มหาวิทยาลัยขอนแก่น
คำสำคัญ (EN): Lower Mekong Basin
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

Chuleemas Boonthai Iwai. "Effect of Dissolved Organic Carbon (DOC) on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River, Cambodia". มหาวิทยาลัยขอนแก่น. 2559

Chuleemas Boonthai Iwai. "Effect of Dissolved Organic Carbon (DOC) on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River, Cambodia". มหาวิทยาลัยขอนแก่น. 2559. Print.



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Effect of Dissolved Organic Carbon (DOC) on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River, Cambodia
Chuleemas Boonthai Iwai
มหาวิทยาลัยขอนแก่น
2559
Effect of Hardness on Acute Toxicity of Copper to Tropical Freshwater Biota in Mekong River Water, Laos Acute toxicity testing of copper on four species of tropical freshwater biota (Moina macrocopa, Chironomus javanus, Ctenopharyngodon idella and Oreochromis niloticus) Effects of different quality organic residues applied yearly for the long term on dissolved organic matter dynamics in a sandy soil Comparison of carbon footprint of organic and conventional farming of chinese kale STUDY ON THE EFFECT OF POLAR ORGANIC SOLVENT ON REMOVE PROTEIN FROM NATURAL RUBBER Comparative tolerance of Tropical Green Manure to oAI Toxicity in Acid Sulfate Organic food market trend and consumers’ profile in Phnom Penh city, Cambodia Practices sustaining soil organic matter and rice yield in a tropical monsoon region Effect of Carbon Black and BaSo4 on the Thermo-Chemical Resistance of Natural Rubber Composite Consumers’ knowledge and awareness towards organic vegetable certification in Phnom Penh City, Cambodia
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