辽河保护区表层沉积物风险污染物质清单筛选研究

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Abstract

The average concentrations of 74 types of pollutants in surface sediment of Liaohe River protected areas were determined with the chemical analysis. A modified hazard potential index (HP) method, which took into account the summation of hazard potential values and occurrence and levels of organic pollutants, was applied for the calculation of weighted scores for each contaminant. The risk quotient was used in evaluating the ecological risk of nonionic ammonia in sediments to determine whether nonionic ammonia could be included in the list of risk pollutants. The potential ecological risk evaluation index and threshold effect concentration of EPA sediment quality guidelines were used together to screen heavy metals. The results showed that nonionic ammonia, Cd, Benzo[a]anthracene, Benzo[a]pyrene, Dichlorvos, and Benzo[k]fluoranthene, Chrysene and Indene[1,2,3-c,d] pyrene were risk pollutants in surface sediment of Liao protected areas.

Key words： Liaohe River protected areas surface sediment potential risk index weighted scoring method risk quotient risk pollutants list

Received: 20 January 2017

PACS:

X142

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	Articles by authors
	KE Xin
	BAO Qing-hua
	HUANG Xiao-yan
	QI Yi-fang
	ZHANG Hai-jun

Cite this article:

KE Xin,BAO Qing-hua,HUANG Xiao-yan等. Screening of risk pollutants in surface sediment of Liaohe river protected areas[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(8): 3107-3113.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I8/3107

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