研究了Hg2+、Cr6+和Pb2+等重金属及2,4-二氯酚、2,4,6-三氯酚和五氯酚等氯酚类物质对霍甫水丝蚓(Limnodrilus hof meisteri)的急性毒性效应.结果表明, Hg2+、Cr6+和Pb2+对霍甫水丝蚓的96h-LC50分别为0.16,4.25,76.24mg/L；2,4-二氯酚、2,4,6-三氯酚和五氯酚对霍甫水丝蚓的96h-LC50分别为20.73,7.86,2.42mg/L.根据6种污染物对霍甫水丝蚓的毒性实验结果,预测水体中Hg2+、Cr6+和Pb2+对霍甫水丝蚓的安全浓度SC分别为16,425,7624μg/L,最大允许浓度分别为1.6,42.5,762.4μg/L；2,4-二氯酚、2,4,6-三氯酚和五氯酚对霍甫水丝蚓的安全浓度SC分别为2073,786,242μg/L,最大允许浓度MPC分别为207.3,78.6,24.2μg/L.6种污染物的毒性评估结果显示,Hg2+对霍甫水丝蚓表现为极高毒性,Cr6+、2,4,6-三氯酚和五氯酚对其表现为高等毒性,Pb2+和2,4-二氯酚表现为中等毒性.3种重金属对其毒性顺序为：Hg2+>Cr6+>Pb2+；3种氯酚类物质对其毒性大小依次为：五氯酚>2,4,6-三氯酚>2,4-二氯酚.
研究瞭Hg2+、Cr6+和Pb2+等重金屬及2,4-二氯酚、2,4,6-三氯酚和五氯酚等氯酚類物質對霍甫水絲蚓(Limnodrilus hof meisteri)的急性毒性效應.結果錶明, Hg2+、Cr6+和Pb2+對霍甫水絲蚓的96h-LC50分彆為0.16,4.25,76.24mg/L；2,4-二氯酚、2,4,6-三氯酚和五氯酚對霍甫水絲蚓的96h-LC50分彆為20.73,7.86,2.42mg/L.根據6種汙染物對霍甫水絲蚓的毒性實驗結果,預測水體中Hg2+、Cr6+和Pb2+對霍甫水絲蚓的安全濃度SC分彆為16,425,7624μg/L,最大允許濃度分彆為1.6,42.5,762.4μg/L；2,4-二氯酚、2,4,6-三氯酚和五氯酚對霍甫水絲蚓的安全濃度SC分彆為2073,786,242μg/L,最大允許濃度MPC分彆為207.3,78.6,24.2μg/L.6種汙染物的毒性評估結果顯示,Hg2+對霍甫水絲蚓錶現為極高毒性,Cr6+、2,4,6-三氯酚和五氯酚對其錶現為高等毒性,Pb2+和2,4-二氯酚錶現為中等毒性.3種重金屬對其毒性順序為：Hg2+>Cr6+>Pb2+；3種氯酚類物質對其毒性大小依次為：五氯酚>2,4,6-三氯酚>2,4-二氯酚.
연구료Hg2+、Cr6+화Pb2+등중금속급2,4-이록분、2,4,6-삼록분화오록분등록분류물질대곽보수사인(Limnodrilus hof meisteri)적급성독성효응.결과표명, Hg2+、Cr6+화Pb2+대곽보수사인적96h-LC50분별위0.16,4.25,76.24mg/L；2,4-이록분、2,4,6-삼록분화오록분대곽보수사인적96h-LC50분별위20.73,7.86,2.42mg/L.근거6충오염물대곽보수사인적독성실험결과,예측수체중Hg2+、Cr6+화Pb2+대곽보수사인적안전농도SC분별위16,425,7624μg/L,최대윤허농도분별위1.6,42.5,762.4μg/L；2,4-이록분、2,4,6-삼록분화오록분대곽보수사인적안전농도SC분별위2073,786,242μg/L,최대윤허농도MPC분별위207.3,78.6,24.2μg/L.6충오염물적독성평고결과현시,Hg2+대곽보수사인표현위겁고독성,Cr6+、2,4,6-삼록분화오록분대기표현위고등독성,Pb2+화2,4-이록분표현위중등독성.3충중금속대기독성순서위：Hg2+>Cr6+>Pb2+；3충록분류물질대기독성대소의차위：오록분>2,4,6-삼록분>2,4-이록분.
Acute toxic effects of mercury (Hg2+), chromium (Cr6+), lead (Pb2+), 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP) and pentachlorophenol (PCP) were investigated using Limnodrilus hoffmeisteri as living test organisms. The results provide new data of toxicity of heavy metals and chlorophenols to indigenous aquatic organisms and deal with the environmental emergencies in China. The 96h-LC50values to Limnodrilus hoffmeisteri were 0.16, 4.25, and 76.24mg/L for Hg2+, Cr6+and Pb2+, respectively, and 20.73, 7.86, and 2.42mg/L for 2,4-DCP, 2,4,6-TCP, and PCP, respectively. According to the results of the acute toxicity tests on Limnodrilus hoffmeisteri, the safe concentration (SC) of Hg2+, Cr6+, and Pb2+ was 16, 425, and 7624μg/L,respectively, and their maximum permissible concentration (MPC) was 1.6, 42.5, and 762.4μg/L, respectively. For 2,4-DCP, 2,4,6-TCP and PCP, the SC was 2073, 786, and 242 μg/L, respectively, and the MPC was 207.3, 78.6, and 24.2 μg/L, respectively. These results showed that the toxicity among the three heavy metals to L. hoffmeisteri is Hg2+>Cr6+>Pb2+, the toxicity among the three chlorophenols to L. hoffmeisteri is PCP>2,4,6-TCP>2,4-DCP.
