凤垟乡稻田土壤重金属污染评价及其来源

doi:10.16178/j.issn.0528-9017.20230801

摘要/Abstract

摘要：

以泰顺县凤垟乡稻田土壤为研究对象,采集了6个种植区域站位点的土壤,通过电感耦合等离子质谱仪法测定了土壤中Cu、Pb、Cd、Zn、Cr和Ni含量,并采用单因子污染指数、内梅罗综合污染指数和地累积指数法对研究区域稻田土壤的污染程度进行了分析。结果表明:稻田土壤中Cu、Pb、Cd、Zn、Cr和Ni的平均含量分别为11.35、26.75、0.29、57.92、23.92、14.35 mg·kg^-1。通过单因子污染指数、内梅罗综合污染指数和地累积指数法评价后,表明6个站位点均为无污染状态。通过与农用地土壤风险筛选值比对,所调查的稻田土壤重金属含量均值均小于对应的农用地土壤风险筛选值。

关键词: 稻田, 重金属污染, 土壤环境质量, 内梅罗污染指数, 地累积指数

Abstract:

Taking the paddy soil from Fengyang Town in Taishun County as the research object, soil samples were collected from six planting area sites. The contents of Cu, Pb, Cd, Zn, Cr and Ni in the soil were determined using inductively coupled plasma mass spectrometry (ICP-MS). The pollution degree of the paddy soil in the study area was analyzed using the single factor pollution index, Nemerow comprehensive pollution index, and geoaccumulation index methods. The results showed that the average contents of Cu, Pb, Cd, Zn, Cr and Ni in the paddy soil were 11.35, 26.75, 0.29, 57.92, 23.92 and 14.35 mg·kg^-1, respectively. The single factor pollution index, Nemerow comprehensive pollution index, and geoaccumulation index methods indicated that all six sampling sites were in a non-polluted state. Compared with the risk screening values for agricultural soil, the average heavy metal content in the surveyed paddy soils was lower than the corresponding risk screening values for agricultural soil.

Key words: paddy soil, heavy metal pollution, environmental quality of soil, Nemerow comprehensive pollution index, geoaccumulation index

中图分类号:

陈星星. 凤垟乡稻田土壤重金属污染评价及其来源[J]. 浙江农业科学, 2024, 65(10): 2378-2382.

CHEN Xingxing. Evaluation of heavy metal contamination in paddy soil and its sources in Fengyang[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(10): 2378-2382.

图/表 7

参考文献 8

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P_i	污染等级	P_in	污染等级
≤1.0	无污染	≤0.7	无污染
>1.0~2.0	轻污染	>0.7~1.0	尚未污染(警戒线)
>2.0~3.0	中度污染	>1.0~2.0	轻污染
>3.0	重度污染	>2.0~3.0	中度污染
		>3.0	重度污染

P_i	污染等级	P_in	污染等级
≤1.0	无污染	≤0.7	无污染
>1.0~2.0	轻污染	>0.7~1.0	尚未污染(警戒线)
>2.0~3.0	中度污染	>1.0~2.0	轻污染
>3.0	重度污染	>2.0~3.0	中度污染
		>3.0	重度污染

Igeo	污染程度
≤0	无污染
>0~1	轻污染
>1~2	中污染
>2~3	中-强污染
>3~4	强污染
>4~5	强-极强污染
>5	极强污染

Igeo	污染程度
≤0	无污染
>0~1	轻污染
>1~2	中污染
>2~3	中-强污染
>3~4	强污染
>4~5	强-极强污染
>5	极强污染

种植区	P_i						P_in
种植区	Cu	Pb	Cd	Zn	Cr	Ni	P_in
1	0.26	0.27	0.82	0.12	0.10	0.33	0.62
2	0.20	0.28	0.73	0.10	0.08	0.17	0.55
3	0.27	0.32	0.80	0.14	0.11	0.22	0.61
4	0.19	0.26	0.61	0.08	0.06	0.13	0.46
5	0.29	0.22	0.76	0.19	0.15	0.23	0.58
6	0.16	0.26	0.57	0.09	0.07	0.14	0.43