CAJ | 학술논문

为探明大环江沿岸受有色金属矿业影响污染严重的稻田和废弃农田的重金属状况,采集了广西河池板力村沿岸稻田土样和稻谷样品,采用ICP-AES法分析了As、Cd、Cr、Cu、Mn、Ni、Pb、Sb、Zn等重金属元素浓度,并采用地质累积指数判定法对稻田土污染程度进行评价,采用污染指数判定法对稻谷污染程度进行评价. 结果表明:广西河池大环江板力村河岸污染农田主要超标元素为Pb、Zn和As,废弃田中这几种元素的平均浓度分别为388、275和29.4 mg·kg~(-1).依据地质累积指数判定法,Pb为强污染,Zn为中度污染,As为轻污染.稻米中主要超标元素为Pb和Cu,其平均值分别为1.85和14.7 mg·kg~(-1).稻壳中的重金属浓度高于稻米,且瘪谷壳中的重金属浓度高于正常结粒稻壳(Cu除外),说明稻壳比稻米更易累积重金属.
위탐명대배강연안수유색금속광업영향오염엄중적도전화폐기농전적중금속상황,채집료엄서하지판력촌연안도전토양화도곡양품,채용ICP-AES법분석료As、Cd、Cr、Cu、Mn、Ni、Pb、Sb、Zn등중금속원소농도,병채용지질루적지수판정법대도전토오염정도진행평개,채용오염지수판정법대도곡오염정도진행평개. 결과표명:엄서하지대배강판력촌하안오염농전주요초표원소위Pb、Zn화As,폐기전중저궤충원소적평균농도분별위388、275화29.4 mg·kg~(-1).의거지질루적지수판정법,Pb위강오염,Zn위중도오염,As위경오염.도미중주요초표원소위Pb화Cu,기평균치분별위1.85화14.7 mg·kg~(-1).도각중적중금속농도고우도미,차별곡각중적중금속농도고우정상결립도각(Cu제외),설명도각비도미경역루적중금속.
To determine the level of heavy metal in polluted paddy soil and rice along Dahuan River, ICP-AES was used to analyze heavy metal elements including As, Cd, Cr, Cu, Mn, Ni, Pb, Sb and Zn of paddy soil samples and rice samples. The interpretation of geo-accumulation index(Igeo)was used to assess the contamination of the paddy soil and the pollution indices were used to evaluate the contamination of rice. The results showed that Pb, Zn and As in paddy soil exceeded the national standard, with the mean concentrations in abandoned paddy field being 29.4 mg·kg~(-1) , 388 mg·kg~(-1) and 29.4 mg·kg~(-1), respectively. According to Igeo, Pb was heavily contaminated, Zn was moderately contaminated, and As was lightly contaminated. The main contaminated heavy metals in rice were Pb and Cu, and their mean concentrations were 1.85 mg·kg~(-1) and 14.7 mg·kg~(-1), respectively. The concentrations of heavy metals in rice polishing were much higher than in the rice, and those, except for Cu, in the polishing of the poorer quality rice (i.e., shriveled rice) were much higher than higher quality rice, suggesting that heavy metals preferred to concentrate in rice polishing.