现代地质
現代地質
현대지질
GEOSCIENCE-JOURNAL OF GRADUATE SCHOOL CHINA UNIVERSITY OF GEOSCIENCES
2014年
3期
523-530
,共8页
崔邢涛%秦振宇%栾文楼%宋泽峰
崔邢濤%秦振宇%欒文樓%宋澤峰
최형도%진진우%란문루%송택봉
土壤%重金属污染%潜在生态危害%评价%保定市
土壤%重金屬汙染%潛在生態危害%評價%保定市
토양%중금속오염%잠재생태위해%평개%보정시
soil%heavy metal contamination%potential ecological hazard%assessment%Baoding city
以河北省保定市平原区土壤为对象，采用单因子指数法和尼梅罗综合指数法对土壤重金属的环境质量及污染特征进行评价，并采用Hakanson提出的潜在生态危害指数法对土壤中重金属的潜在生态危害进行评价。结果表明：重金属污染程度依次是Cd＞Zn＞Hg＞Cu＞Pb＞Cr＞Ni＞As，其中Cr、Pb、Ni、As都处于清洁安全状态，Hg和Cu绝大部分样点处于清洁安全状态，分别只有0.15％和0.40％处于警戒状态，Cd、Zn元素都出现污染，其中Cd面积最大，达到0.22％；综合污染评价土壤环境整体良好，清洁、安全、警戒、污染土壤面积比例分别为94.39％、5.00％、0.50％、0.11％，其中警戒及污染土壤面积为0.61％，其形成可能与工业生产及人类活动有关；各重金属元素中，产生潜在生态危害的重金属主要是Hg，已达到中等潜在生态危害水平，其余重金属均为轻度潜在生态危害，综合考虑多种重金属的潜在生态危害性，其轻微生态危害、中等生态危害、强生态危害、很强生态危害的百分比分别为93.71％、4.71％、1.29％、0.29％，整体表现为轻微潜在生态危害。
以河北省保定市平原區土壤為對象，採用單因子指數法和尼梅囉綜閤指數法對土壤重金屬的環境質量及汙染特徵進行評價，併採用Hakanson提齣的潛在生態危害指數法對土壤中重金屬的潛在生態危害進行評價。結果錶明：重金屬汙染程度依次是Cd＞Zn＞Hg＞Cu＞Pb＞Cr＞Ni＞As，其中Cr、Pb、Ni、As都處于清潔安全狀態，Hg和Cu絕大部分樣點處于清潔安全狀態，分彆隻有0.15％和0.40％處于警戒狀態，Cd、Zn元素都齣現汙染，其中Cd麵積最大，達到0.22％；綜閤汙染評價土壤環境整體良好，清潔、安全、警戒、汙染土壤麵積比例分彆為94.39％、5.00％、0.50％、0.11％，其中警戒及汙染土壤麵積為0.61％，其形成可能與工業生產及人類活動有關；各重金屬元素中，產生潛在生態危害的重金屬主要是Hg，已達到中等潛在生態危害水平，其餘重金屬均為輕度潛在生態危害，綜閤攷慮多種重金屬的潛在生態危害性，其輕微生態危害、中等生態危害、彊生態危害、很彊生態危害的百分比分彆為93.71％、4.71％、1.29％、0.29％，整體錶現為輕微潛在生態危害。
이하북성보정시평원구토양위대상，채용단인자지수법화니매라종합지수법대토양중금속적배경질량급오염특정진행평개，병채용Hakanson제출적잠재생태위해지수법대토양중중금속적잠재생태위해진행평개。결과표명：중금속오염정도의차시Cd＞Zn＞Hg＞Cu＞Pb＞Cr＞Ni＞As，기중Cr、Pb、Ni、As도처우청길안전상태，Hg화Cu절대부분양점처우청길안전상태，분별지유0.15％화0.40％처우경계상태，Cd、Zn원소도출현오염，기중Cd면적최대，체도0.22％；종합오염평개토양배경정체량호，청길、안전、경계、오염토양면적비례분별위94.39％、5.00％、0.50％、0.11％，기중경계급오염토양면적위0.61％，기형성가능여공업생산급인류활동유관；각중금속원소중，산생잠재생태위해적중금속주요시Hg，이체도중등잠재생태위해수평，기여중금속균위경도잠재생태위해，종합고필다충중금속적잠재생태위해성，기경미생태위해、중등생태위해、강생태위해、흔강생태위해적백분비분별위93.71％、4.71％、1.29％、0.29％，정체표현위경미잠재생태위해。
With the urban soil of plain area of Baoding city as a target,this essay evaluates the environmental quality of soil heavy metals and pollution characteristics by adopting the single factor index method and Nemerow comprehensive index method.Besides,the potential ecological hazard index suggested by Hakanson is used to assess the ecological hazard of heavy metal in urban soil.The results show that the elements,according to the pollution degree of heavy metal,are followed by the order of Cd>Zn>Hg>Cu>Pb>Cr>Ni>As.Most im-portantly,Cr,Pb,Ni,As and most of Hg and Cu are in a clean and safe condition,only to find 0.15%of Ni and 0.40%of Cu in an alert state.However,Cd,Zn are all in the pollution state,especially the pollution of Cd represents the largest polluted area,reaching 0.22%.On the whole,Integrated Pollution Assessment showed the soil environment is good,in which clean,safe,alert,contaminated soil area ratio is 94.39%,5.00%, 0.50%,0.11% respectively;and alert and contaminated soil area accounts for 0.61%.Its formation may be related to industrial production and human activities.In the heavy metal elements,resulting in potential ecologi-cal hazard of heavy metals is mainly Hg,which have reached to moderate potential ecological hazard level,the remaining heavy metals are all mild potential ecological hazard.Considering synthetically the potential ecological hazard of heavy metals,we found that the percentage of small,medium,high and strong ecological hazard is respectively 93.71%,4.71%,1.29%,0.29%.Therefore,the general performance is the small potential ecological hazard.
