Concentrations and health risks of mercury in aquatic products from the tributaries of Yongjiang in Guangxi

Abstract

Abstract:

Objective To understand the content of mercury in common freshwater fish and snails in aquatic products from the tributaries of Yongjiang in Guangxi，and to evaluate the health risks. Methods From August to December 2024，461 samples of 10 species of freshwater fish and snail were collected from two tributaries of the Yongjiang river in Guangxi Zhuang Autonomous Region. The mercury content in the edible parts of aquatic products was determined using the direct mercury analyzer method. The pollution level and health risk were evaluated using the single factor pollution index method and target hazard quotient，and the correlation analysis between mercury content and weight in some fish species was conducted. Results The highest content of mercury among the 11 aquatic products from the Yongjiang in Guangxi Zhuang Autonomous Region was topmouth culter，but the mercury content in all aquatic products did not exceed the standard. The single pollution index showed that 4.4% of silver carps and 100.0% of topmouth culters were mildly polluted by mercury，while the rest of the fish species were at normal background levels. The health risk assessment results indicate that the target hazard quotient for topmouth culters was greater than 1，while the target hazard quotients for the other ten types of aquatic products were less than 1. According to correlation analysis，it was found that there was a significant correlation between the levels of mercury and weight in the dorsal muscles of silver carp and mirror carp. Conclusion All aquatic products sourced from Yongjiang in Guangxi in this collected samples exhibited no instances of mercury exceeding safe limits，with the mercury contamination in the samples remaining at a relatively low level. With the exception of carnivorous fish like the predatory carp，the prolonged consumption of the remaining ten species of aquatic products from Yongjiang in Guangxi poses no significant risk to human health.

Key words: Yongjiang, Aquatic products, Mercury content, Health risks

CLC Number:

R1551

Yantao HUANG, Shanfan LIANG, Yunyan FAN, Qiong TANG, Siyi CHEN, Shuting MENG. Concentrations and health risks of mercury in aquatic products from the tributaries of Yongjiang in Guangxi[J]. OCCUPATION AND HEALTH, 2025, 41(23): 3209-3213.

Figures/Tables 4

References 31

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采样地点	种类	总数	汞含量范围（mg/kg）	$\bar{x}±s$ （mg/kg）	M （mg/kg）
甲支流口	罗非鱼	130	0.006 2~0.037 4	0.015 6±0.005 6	0.014 6
	蓝刀	9	0.034 3~0.071 1	0.052 3±0.012 1	0.049 6
	白鲢鱼	159	0.017 4~0.160 5	0.061 2±0.018 1	0.059 0
	禾花鲤	8	0.005 5~0.018 2	0.012 6±0.004 6	0.014 3
	鲤鱼	11	0.011 5~0.059 0	0.021 7±0.014 0	0.016 7
	麦鲮鱼	72	0.020 9~0.064 0	0.034 6±0.008 8	0.032 5
	翘嘴鱼	2	0.159 0~0.211 0	0.185 0±0.036 7	0.185 0
	清道夫	7	0.020 2~0.035 7	0.029 0±0.005 0	0.029 9
	土鲮鱼	11	0.018 1~0.052 4	0.032 0±0.010 6	0.033 1
	田螺	3	0.022 9~0.038 6	0.029 9±0.007 9	0.028 3
	青梢鱼	2	0.076 8~0.098 7	0.087 8±0.015 5	0.087 8
	总体	414	0.005 5~0.211 0	0.039 4±0.027 0	0.035 2
乙支流口	罗非鱼	17	0.005 6~0.018 9	0.012 9±0.004 3	0.012 7
	白鲢鱼	6	0.026 1~0.049 7	0.040 3±0.010 1	0.042 7
	禾花鲤	5	0.006 8~0.032 9	0.020 3±0.010 8	0.020 8
	麦鲮鱼	8	0.025 2~0.044 8	0.030 0±0.006 3	0.028 1
	土鲮鱼	2	0.032 8~0.071 7	0.052 3±0.027 5	0.052 3
	田螺	9	0.028 7~0.037 4	0.033 1±0.003 1	0.032 6
	总体	47	0.005 8~0.071 7	0.025 2±0.015 3	0.025 9

采样地点	种类	总数	汞含量范围（mg/kg）	$\bar{x}±s$ （mg/kg）	M （mg/kg）
甲支流口	罗非鱼	130	0.006 2~0.037 4	0.015 6±0.005 6	0.014 6
	蓝刀	9	0.034 3~0.071 1	0.052 3±0.012 1	0.049 6
	白鲢鱼	159	0.017 4~0.160 5	0.061 2±0.018 1	0.059 0
	禾花鲤	8	0.005 5~0.018 2	0.012 6±0.004 6	0.014 3
	鲤鱼	11	0.011 5~0.059 0	0.021 7±0.014 0	0.016 7
	麦鲮鱼	72	0.020 9~0.064 0	0.034 6±0.008 8	0.032 5
	翘嘴鱼	2	0.159 0~0.211 0	0.185 0±0.036 7	0.185 0
	清道夫	7	0.020 2~0.035 7	0.029 0±0.005 0	0.029 9
	土鲮鱼	11	0.018 1~0.052 4	0.032 0±0.010 6	0.033 1
	田螺	3	0.022 9~0.038 6	0.029 9±0.007 9	0.028 3
	青梢鱼	2	0.076 8~0.098 7	0.087 8±0.015 5	0.087 8
	总体	414	0.005 5~0.211 0	0.039 4±0.027 0	0.035 2
乙支流口	罗非鱼	17	0.005 6~0.018 9	0.012 9±0.004 3	0.012 7
	白鲢鱼	6	0.026 1~0.049 7	0.040 3±0.010 1	0.042 7
	禾花鲤	5	0.006 8~0.032 9	0.020 3±0.010 8	0.020 8
	麦鲮鱼	8	0.025 2~0.044 8	0.030 0±0.006 3	0.028 1
	土鲮鱼	2	0.032 8~0.071 7	0.052 3±0.027 5	0.052 3
	田螺	9	0.028 7~0.037 4	0.033 1±0.003 1	0.032 6
	总体	47	0.005 8~0.071 7	0.025 2±0.015 3	0.025 9

采样地点	种类	P_i（以均值计）	未受污染（%）	轻度污染（%）
甲支流口	罗非鱼	0.031	100.0	0.0
	蓝刀	0.110	100.0	0.0
	白鲢鱼	0.122	95.6	4.4
	禾花鲤	0.025	100.0	0.0
	鲤鱼	0.043	100.0	0.0
	麦鲮鱼	0.069	100.0	0.0
	翘嘴鱼	0.370	0.0	100.0
	清道夫	0.058	100.0	0.0
	土鲮鱼	0.064	100.0	0.0
	青梢鱼	0.176	100.0	0.0
	田螺	0.060	100.0	0.0
乙支流口	罗非鱼	0.026	100.0	0.0
	蓝刀	0.105	100.0	0.0
	白鲢鱼	0.081	100.0	0.0
	禾花鲤	0.041	100.0	0.0
	麦鲮鱼	0.060	100.0	0.0
	土鲮鱼	0.105	100.0	0.0
	田螺	0.066	100.0	0.0

采样地点	种类	P_i（以均值计）	未受污染（%）	轻度污染（%）
甲支流口	罗非鱼	0.031	100.0	0.0
	蓝刀	0.110	100.0	0.0
	白鲢鱼	0.122	95.6	4.4
	禾花鲤	0.025	100.0	0.0
	鲤鱼	0.043	100.0	0.0
	麦鲮鱼	0.069	100.0	0.0
	翘嘴鱼	0.370	0.0	100.0
	清道夫	0.058	100.0	0.0
	土鲮鱼	0.064	100.0	0.0
	青梢鱼	0.176	100.0	0.0
	田螺	0.060	100.0	0.0
乙支流口	罗非鱼	0.026	100.0	0.0
	蓝刀	0.105	100.0	0.0
	白鲢鱼	0.081	100.0	0.0
	禾花鲤	0.041	100.0	0.0
	麦鲮鱼	0.060	100.0	0.0
	土鲮鱼	0.105	100.0	0.0
	田螺	0.066	100.0	0.0