CAJ | 학술논문

分别采集旱地、水稻田和基地0～20 cm表层土,对不同种植作物土壤中的Cr、Cu、As、Pb、Zn含量及污染状况进行分析研究.Cr、Cu,As、Pb、Zn含量用等离子体发射光谱法ICP-AES测定.pH值测定采用Lp115型pH计,土壤污染状况采用内梅罗指数法进行评价.对比研究分析结果表明,全部土壤样品中As的含量低于陕西和全国的平均值,低于半数土样中Cr的含量高于陕西或全国平均值,超过半数以上的土样中Cu、Zn的含量高于陕西或全国平均值,所有上样中 Pb含量高于陕西或全国平均值.单因子污染指数法和综合污染指数法研究分析表明,以国家二级标准为评价标准,研究区土壤未受污染,土壤为清洁,土壤质量完全符合农作物生长条件,对农产品质量不构成威胁.与陕西省自然背景平均值相比.可以看出Cu、Zn、Pb 3种重金属元素高于陕西省自然背景平均值,Cr、As 2种重金属元素低于陕西省自然背景平均值,土壤受到了轻度污染,说明评价标准的不同,评价结果仃任明显差异.农田上壤样品重金属元素污染现象与土壤利用类型明显相关.土壤中As的禽量为玉米地＞水稻土＞荒地,Cr、Cu、Zn的含量为玉米地＞荒地＞水稻土,Pb的含量为水稻土＞玉米地＞荒地.可见,旱地相对水田更易积累重金属元素Cr,Cu,Zn、As.
분별채집한지、수도전화기지0～20 cm표층토,대불동충식작물토양중적Cr、Cu、As、Pb、Zn함량급오염상황진행분석연구.Cr、Cu,As、Pb、Zn함량용등리자체발사광보법ICP-AES측정.pH치측정채용Lp115형pH계,토양오염상황채용내매라지수법진행평개.대비연구분석결과표명,전부토양양품중As적함량저우협서화전국적평균치,저우반수토양중Cr적함량고우협서혹전국평균치,초과반수이상적토양중Cu、Zn적함량고우협서혹전국평균치,소유상양중 Pb함량고우협서혹전국평균치.단인자오염지수법화종합오염지수법연구분석표명,이국가이급표준위평개표준,연구구토양미수오염,토양위청길,토양질량완전부합농작물생장조건,대농산품질량불구성위협.여합서성자연배경평균치상비.가이간출Cu、Zn、Pb 3충중금속원소고우합서성자연배경평균치,Cr、As 2충중금속원소저우합서성자연배경평균치,토양수도료경도오염,설명평개표준적불동,평개결과정임명현차이.농전상양양품중금속원소오염현상여토양이용류형명현상관.토양중As적금량위옥미지＞수도토＞황지,Cr、Cu、Zn적함량위옥미지＞황지＞수도토,Pb적함량위수도토＞옥미지＞황지.가견,한지상대수전경역적루중금속원소Cr,Cu,Zn、As.
Through sampling in farmland and analysis in laboratory,the contents and the pollution level of Cr,Cu,As.Pb,Zn in different soils were studied.The comparative result showed that the As in all soil samples are lower than the mean value of Shaanxi and whole nation,the Cr in lower half soil samples are higher than the mean value of Shaanxi and whole nation,the Cu and Zn in majority soil samples are higher than the mean value of Shaanxi and whole nation,and the Pb in all soil samples is higher than the mean value of Shaanxi and whole nation.The single factor pollution index and multi-factor pollution index method were used to evaluate the soil pollution.According to Soil Environmental Quality Standard.the studied soils were at unpolluted degrees,the soils were clear,the quality of soil adapt to the crop growth,and not affect the quality of agricultural product.