山西农业大学学报（自然科学版）2018，Vol.38Issue(5)：64-70,7.DOI:10.13842/j.cnki.issn1671-8151.201802013
煤矿区果菜类蔬菜重金属富集特征及污染风险评价
Enrichment characteristics and pollution risk assessment of heavy metals in fruit vegetable around coal mine
摘要
Abstract
[Objective]This study was aimed to recognize the migration routes,enrichment characteristics,and pollution hazards of heavy metals in vegetation near coal mines.[Methods]The samples were collected near Qi Nan coal mines, and heavy metal contents in the soil and different organs of fruits vegetables(cowpea,eggplant,and pepper)were ana-lyzed.Richness of heavy metals at root system and transportation ability in the fruits in different vegetables were com-pared.Pollution levels and health risks of heavy metal in edible parts of vegetables were evaluated by using the compre-hensive pollution indexes and heavy metal exposure risk indexes.[Results]Results indicated that the average contents of Cd,Cr,and Ni at 0.347 mg·kg -1,72.614 mg·kg -1,and 41.189 mg·kg -1,respectively,in soil of coal mining area were higher than the average occurrence values in Anhui province and the average content of Pd at 17.125 mg·kg -1was lower than the provincial average values.A significant difference of heavy metal contents was observed in different or-gans of fruit vegetables.The contents of heavy metals in vegetable leaves and roots were obviously higher,while it was the lowest in the fruits of vegetables,and the levels of heavy metals richness were various in different vegetable varie-ties.The order of richness capacity in the root of vegetables for the soil heavy metals was as to Cd > Pb>Ni>Cr,and Cd enrichment factor of eggplant was 0.565.The level of transport capacity of the vegetable fruit for the heavy metals of the root was as the order of Pb>Ni>Cd>Cr.The transfer coefficients of the eggplant fruit were significantly high-er than that of cowpea and pepper,and the transfer coefficients for Pb was the largest at 0.565.Heavy metal pollution level of vegetable soil in the coal mining area was fairly high,and eggplant was significantly affected by heavy pollu-tion,while cowpea and peppers were easily affected by either light or moderate pollution.No obvious health risk was observed for residents in coal mine area through the intake of Cd,Cr and Ni from vegetables,but it might be harmful to the health through the intake of Pb.[Conclusion]There were significant differences in the characteristics of heavy metal en-richment in fruits vegetables,and the vegetables in coal mining areas were contaminated by heavy metals at various levels.关键词
煤矿区/果菜类蔬菜/重金属/富集特征/污染风险评价Key words
Coal mining area/Fruit vegetables/Heavy metal/Enrichment characteristics/Pollution risk assessment分类
资源环境引用本文复制引用
高杨,李琦,许东升..煤矿区果菜类蔬菜重金属富集特征及污染风险评价[J].山西农业大学学报（自然科学版）,2018,38(5):64-70,7.基金项目
安徽高校省级自然科学研究重点项目(KJ2014A251) （KJ2014A251）
宿州学院优秀学术技术骨干项目(2016XJGG10) （2016XJGG10）
安徽高校省级人文社会科学研究重点项目(SK2016A0995) （SK2016A0995）
宿州学院重点科研项目(2016yzd07) （2016yzd07）
