CAJ | 학술논문

在琼海市12个乡镇的典型土壤中采集21个混合土壤样本，并对各土壤样本中重金属元素 Hg、 Cd、Cr、 Pb 和 As 的含量进行测定，以了解琼海市水稻土重金属含量及污染现状。依据国家土壤环境质量二级标准，采用单项污染指数法以及内梅罗综合污染指数法评价土壤中重金属的污染程度。结果表明：琼海市水稻土各重金属元素的平均含量均小于二级标准值；表层土壤 Pb 和 Hg、 Pb 和 Cd、 As 和 Cd、 As 和 Pb 之间存在显著相关性(P＜0.01)；从单项污染指数来看，除了大路镇存在 Cr 元素轻度污染外，其他各乡镇均未受到重金属 Hg、 Cd、Cr、 Pb 和 As 的污染；从全市范围来看，仅有大路镇为警戒级程度，其他11个乡镇安全清洁，全市的综合污染指数仅为0.32，说明全市水稻土环境质量状况整体清洁，处于安全水平。
재경해시12개향진적전형토양중채집21개혼합토양양본，병대각토양양본중중금속원소 Hg、 Cd、Cr、 Pb 화 As 적함량진행측정，이료해경해시수도토중금속함량급오염현상。의거국가토양배경질량이급표준，채용단항오염지수법이급내매라종합오염지수법평개토양중중금속적오염정도。결과표명：경해시수도토각중금속원소적평균함량균소우이급표준치；표층토양 Pb 화 Hg、 Pb 화 Cd、 As 화 Cd、 As 화 Pb 지간존재현저상관성(P＜0.01)；종단항오염지수래간，제료대로진존재 Cr 원소경도오염외，기타각향진균미수도중금속 Hg、 Cd、Cr、 Pb 화 As 적오염；종전시범위래간，부유대로진위경계급정도，기타11개향진안전청길，전시적종합오염지수부위0.32，설명전시수도토배경질량상황정체청길，처우안전수평。
In order to investigate the condition of heavy metals in paddy soil of Qionghai City, 21 mixed soil samples were collected in typical soils of 12 villages and towns , and their contents of Hg, Cd, Cr, Pb and As were detected. According to the second class standard of the national soil environmental quality, pollution severity of heavy metals in the soil was evaluated by monomial pollution index method and Nemerow synthetic pollution index method. The results show that the Qionghai paddy soil all the average contents of heavy metal elements are less than the secondary standard; Surface soil Pb and Hg, Pb and Cd, As and Cd, As and Pb between significant correlation (P<0.01); From the point of monomial pollution index, in addition to Cr element existing light pollution in Dalu town, other villages and towns are not subjected to heavy metal Hg, Cd, Cr, Pb and As pollution; From the city's perspective, only the Dalu town to alert level degree, other villages and towns belong to safe levels, the city's synthetic pollution index was only 0.32, indicating that overall cleanliness of the city's paddy soil and at a safe level.