Determination of heavy metal contents and health risk evaluation of algae in coastal region of Zhejiang Province

doi:10.3969/j.issn.1004-1524.2018.06.20

›› 2018, Vol. 30 ›› Issue (6): 1029-1034.DOI: 10.3969/j.issn.1004-1524.2018.06.20

• Environmental Science • Previous Articles Next Articles

Determination of heavy metal contents and health risk evaluation of algae in coastal region of Zhejiang Province

CHEN Xingxing, WU Yue, ZHOU Chaosheng, LU Rongmao, ZENG Guoquan, HUANG Zhenghua^*

Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-Resource, Zhejiang Mariculture Research Institute, Wenzhou 325005, China

Received:2017-12-11 Online:2018-06-20 Published:2018-07-02

Abstract

Abstract: In order to investigate heavy metal pollution status in algae in Zhejiang Province and assess its risk to human health, inductively coupled plasma-mass spectrometry (ICP-MS) was used to detect the contents of Pb, Cd, As and Hg in three kinds of algae. The measured values were compared with current relevant standards in China. To anticipate the risks of heavy metal in algae, target hazard quotients (THQ and TTHQ) were calculated based on the health risk model proposed by the US Environmental Protection Agency (USEPA) in 2000. The results based on 34 samples showed that the standard-exceeding rates of Cd were 83.33% in Sargassum fusiform and 100% in porphyra. The standard-exceeding rates of Pb in Sargassum fusiform, Laminaria japonica, and porphyra were 16.67%, 44.44% and 100%, respectively, and the standard-exceeding rates of inorganic arsenic in Sargassum fusiform and Laminaria japonica were 100% and 66.7%, respectively. The three kinds of algae tended to be safe for adult, but posed a potential risk to children based on the health risks of single heavy metal pollution, especially the pollution of As in Sargassum fusiform and Laminaria japonica, and Cd in porphyra. Based on the assessment of health risks posed by multiple heavy metal pollution, these algae were found to be dangerous both for adult and children. The overall health risks of heavy metals were mainly due to As and Cd pollutions.

Key words: algae, heavy metal, health risk, Zhejiang

CLC Number:

S932.7

CHEN Xingxing, WU Yue, ZHOU Chaosheng, LU Rongmao, ZENG Guoquan, HUANG Zhenghua. Determination of heavy metal contents and health risk evaluation of algae in coastal region of Zhejiang Province[J]. , 2018, 30(6): 1029-1034.

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Determination of heavy metal contents and health risk evaluation of algae in coastal region of Zhejiang Province

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