保定潮土铅的生态毒性及其土壤环境质量基准推导  

Ecotoxicological effect and soil environmental quality criteria of lead in the fluvo-aquic soil of Baoding

作　　者：王晓南[1] 陈丽红[1] 王婉华[1] 刘征涛[1] 张聪 

机构地区：[1]中国环境科学研究院国家环境保护化学品生态效应与风险评估重点实验室环境基准与风险评估国家重点实验室,北京100012 [2]中海石油环保服务有限公司,天津300452

出　　处：《环境化学》2016年第6期1219-1227,共9页Environmental Chemistry

基　　金：国家环境保护公益性行业科研专项(201509032);环境基准与风险评估国家重点实验室自由探索基金(SKLECRA2014OFP06);国家水体污染与治理科技重大专项(2012ZX07501-003)资助~~

摘　　要：以保定市农田潮土为研究对象,利用搜集的本土生物毒性数据,结合本文研究的8种陆生植物(小麦、玉米、莴苣、黄瓜、白菜、大豆、韭菜、番茄)的发芽和根伸长试验以及1种土壤动物(蜗牛)的生长抑制试验,对重金属Pb的生态毒性进行研究,结果表明,莴苣的根伸长对Pb的敏感性最高,小麦的根伸长对Pb的敏感性最低,玉米、白菜和番茄的根伸长对Pb的敏感性指标值均相同,黄瓜和韭菜的根伸长对Pb污染的敏感性指标值均相同,其中,Pb对小麦、玉米、莴苣、黄瓜、白菜、大豆、韭菜、番茄和蜗牛的生长影响的无观察效应浓度(NOEC)值分别为1300、300、100、800、300、500、800、300、1200 mg·kg^(-1).基于log-normal物种敏感度分布法(Species sensitivity distribution,SSD),计算保定市潮土中Pb的HC_5(对5%物种产生危害的浓度)值和土壤环境质量基准值,其中,HC5值为158(74.6<CI<256)mg·kg^(-1),土壤环境质量基准值范围为31.7—158 mg·kg^(-1).In this study,germination and root growth of 8 terrestrial plants（ Triticum aestivum,Zea mays,Lactuca sativa,Cucumis sativus,Brassica pekinensis,Glycine max,Allium tuberosum and Solanum lycopersicum） and growth inhibition of 1 soil invertebrate（ Achatina fulica） were used to determine the chronic ecotoxicological effects of lead using the Fluvo-aquic soil of Baoding. Results showed that for lead,the root growth of terrestrial plant L. sativa was the most sensitive indicator,T. aestivum was the least sensitive species,Z. mays,B. pekinensis and S. lycopersicum had the same sensitivity to lead exposure,whereas,C. sativus and A. tuberosum had the same sensitivity to lead exposure. No observed effect concentration（ NOEC） values for the growth of the terrestrial plantsT. aestivum,Z. mays,L. sativa,C. sativus,B. pekinensis,G. max,A. tuberosum,S. lycopersicum,and the terrestrial invertebrate snail A. fulica were 1300,300,100,800,300,500,800,300 and1200 mg·kg^（-1）,respectively. The HC_5（ hazardous concentration of the 5% species） and the soil environmental quality criteria of lead in the Fluvo-aquic soil of Baoding were calculated based on the log-normal species sensitivity distribution（ SSD） method. The HC_5 value of lead in the Fluvo-aquic soil of Baoding was 158（ 74. 6 CI 255） mg·kg^（-1）,and the ecotoxicity based soil environmental quality criteria of lead was 31.7—158 mg·kg^（-1）.

关 键 词：土壤环境质量基准 铅 陆生植物 土壤动物 物种敏感度分布 

分 类 号：X171.5[环境科学与工程—环境科学] X53