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Environmental quality characteristics of soil and health risk assessment of crops of farmlands in the southern suburb of Baotou |
Bao Feng-Qin1,2( ), Cheng Hang-Xin2( ), Yong Sheng3, Zhou Li-Jun4, Yang Yu-Liang1 |
1. Key Laboratory of Magmatic Activity, Mineralization and Prospecting in Inner Mongolia Autonomous Region, Inner Mongolia Autonomous Region Institute of Geological Survey, Hohhot 010020, China 2. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China 3. Inner Mongolia Police Professional College, Hohhot 010051, China 4. Inner Mongolia Geology and Mineral Resources (Group) Co., Ltd., Hohhot 010024, China |
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Abstract To investigate and assess the characteristics of cadmium, lead, and zinc in the soil and crops in the farmland around the old industrial area in the south of Baotou City, this study analyzed and tested the heavy metal content in soil, crop root soil, and seeds, assess the pollution according to relevant standards, and conducted the risk assessment and source analysis of heavy metals using the pollution index, the bioconcentration factor, and human health risk index. The results are as follows:Regarding the soil environmental quality, the soils in the study area are dominated by clean soils, with the polluted soils distributed primarily on both sides of the old sewage canals.The sites of over-limit root soils are also primarily distributed around the old sewage canals.Among the heavy metal morphologies, carbonate-bound, Fe-Mn-bound, and residue heavy metals account for relatively high proportions, while exchangeable heavy metals (water-soluble and ion-exchange) account for relatively low proportions. Most of the seed samples exhibited normal and low enrichment of heavy metals. Compared with other crops, sunflower seeds showed super adsorptivity of cadmium, lead, and zinc, posing significant non-carcinogenic and carcinogenic health risks to children and adults.
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Received: 01 April 2022
Published: 05 July 2023
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元素 | 检出限/ 10-6 | 报出 率/% | ΔlgC平 均值 | ΔlgC合 格率/% | λ合格 率/% | RSD/% | Cd | 0.02 | 100 | 0.021 | 100 | 100 | 3.07 | Pb | 2 | 100 | 0.04 | 100 | 100 | 5.37 | Zn | 2 | 100 | 0.01 | 100 | 100 | 1.38 |
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Statistical of reporting rate, accuracy and precision of soil sample analysis and testing
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等级 | 一等 | 二等 | 三等 | 四等 | 五等 | 土壤环境 | Pi≤1 | 1<Pi≤2 | 2 <Pi≤3 | 3 <Pi≤5 | Pi≥5 | 清洁 | 轻微污染 | 轻度污染 | 中度污染 | 重度污染 |
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Classification of soil environmental geochemistry
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暴露评价参数 | 成人参考值 | 儿童参考值 | IR | 玉米 | 0.15 kg/d | 0.10 g/d | 向日葵 | 0.10 g/d | 0.03 g/d | 蔬菜 | 0.35 g/d | 0.23 g/d | ED | 24 a | 6 a | BW | 67 kg | 15 kg | EF | 350 d/a | AT | 非致癌物 | ED×365 d | 致癌物 | 70×365 d |
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Health risk assessment exposure parameters
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Distribution of sampling points in the southern suburbs of Baotou
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元素 | 特征值 | 环境地球化学质量等级划分 | 最大值/ 10-6 | 最小值/ 10-6 | 平均值/ 10-6 | 清洁 | 轻微污染 | 轻度污染 | 中度污染 | 重度污染 | 样品数 | 比例/% | 样品数 | 比例/% | 样品数 | 比例/% | 样品数 | 比例/% | 样品数 | 比例/% | Cd | 2.1 | 0.1 | 0.4 | 570 | 86.2 | 73 | 11.0 | 17 | 2.57 | 1 | 0.15 | | | Pb | 889.0 | 15.6 | 146.0 | 470 | 71.1 | 146 | 22.1 | 35 | 5.30 | 9 | 1.36 | 1 | 0.15 | Zn | 1516.0 | 46.7 | 312.0 | 407 | 61.6 | 173 | 26.2 | 65 | 9.83 | 15 | 2.27 | 1 | 0.15 |
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Characteristic values of cadmium, lead and zinc in soil and classification of environmental quality in the southern suburbs of Baotou
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Geochemical grading diagram of cadmium environmental quality in the southern suburbs of Baotou
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Geochemical grading diagram of lead environmental quality in the southern suburbs of Baotou
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Geochemical grading diagram of zinc environmental quality in the southern suburbs of Baotou
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Speciation distribution of heavy metals
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农作物 | 特征值 | 镉 | 铅 | 锌 | | 农作物 | 特征值 | 镉 | 铅 | 锌 | 玉米 | 最大值/10-6 | 1.167 | 380 | 688 | | 葱 | 最大值/10-6 | 1.566 | 592 | 960 | 最小值/10-6 | 0.141 | 41 | 92 | 最小值/10-6 | 0.113 | 29 | 69 | 均值/10-6 | 0.454 | 176 | 321 | 均值/10-6 | 0.583 | 228 | 397 | 向日葵 | 最大值/10-6 | 0.656 | 325 | 585 | | 圆白菜 | 最大值/10-6 | 1.042 | 506 | 866 | 最小值/10-6 | 0.089 | 23 | 55 | 最小值/10-6 | 0.204 | 72 | 143 | 均值/10-6 | 0.330 | 141 | 260 | 均值/10-6 | 0.503 | 208 | 381 |
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Characteristic value of heavy metal content in crop root soil in the southern suburbs of Baotou
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农作物 | 超标样品 | 超标元素(含量/10-6) | 农作物 | 超标样品 | 超标元素(含量/10-6) | 玉米 | Z54 | 镉(1.167)、铅(380)、锌(688) | 葱 | Z45 | 铅(324)、锌(620) | Z31 | 镉(0.606)、铅(348)、锌(624) | Z44 | 铅(253)、锌(454) | BZ20 | 镉(0.821)、铅(364)、锌(617) | BZ02 | 镉(1.566)、铅(592)、锌(947) | BZ21 | 镉(0.726)、铅(274)、锌(487) | BZ10 | 铅(301)、锌(548) | 圆白菜 | Z51 | 铅(217)、锌(422) | BZ11 | 镉(1.259)、铅(586)、锌(960) | Z50 | 镉(1.042)、铅(506)、锌(866) | BZX36 | 镉(0.715)、铅(288)、锌(505) | Z48 | 镉(0.822)、铅(327)、锌(610) | BZX40 | 镉(0.977)、铅(421)、锌(711) | BZX37 | 镉(0.718)、铅(309)、锌(564) | BZX42 | 镉(0.853)、铅(334)、锌(541) | BZX39 | 镉(1.028)、铅(451)、锌(769) | BZX43 | 镉(0.902)、铅(328)、锌(547) | 向日葵 | Z55 | 铅(294)、锌(542) | | | | BZ17 | 镉(0.656)、铅(325)、锌(585) | | | BZ19 | 铅(174)、锌(305) | | |
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Samples and content statistics of crop root soil exceeding the standard in the southern suburbs of Baotou
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农作物 | 特征值 | 镉 | 铅 | 锌 | | 农作物 | 特征值 | 镉 | 铅 | 锌 | 玉米 | 最大值/10-6 | 0.009 | 0.71 | 21.8 | | 葱 | 最大值/10-6 | 0.016 | 0.19 | 5.87 | 最小值/10-6 | 0.002 | 0.07 | 12.2 | 最小值/10-6 | 0.002 | 0.01 | 2.41 | 均值/10-6 | 0.005 | 0.33 | 17.9 | 均值/10-6 | 0.007 | 0.07 | 3.58 | 向日葵 | 最大值/10-6 | 0.303 | 19.70 | 128.0 | | 圆白菜 | 最大值/10-6 | 0.013 | 0.25 | 4.73 | 最小值/10-6 | 0.066 | 0.01 | 74.8 | 最小值/10-6 | 0.001 | 0.01 | 0.96 | 均值/10-6 | 0.168 | 2.38 | 95.1 | 均值/10-6 | 0.002 | 0.05 | 2.04 |
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Characteristic value of heavy metal content in crop seeds in the southern suburbs of Baotou
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农作物 | 超标样品 | 超标元素 (含量/10-6) | | 农作物 | 超标样品 | 超标元素 (含量/10-6) | 玉米 | Z54 | 铅(0.40) | | 向日葵 | Z55 | 铅(0.61) | Z31 | 铅(0.51) | Z30 | 铅(0.22) | BZ20 | 铅(0.71) | Z29 | 铅(0.33) | BZ21 | 铅(0.32) | Z28 | 铅(0.35) | BZ23 | 铅(0.40) | Z16 | 铅(19.7) | BZ25 | 铅(0.49) | 圆白菜 | BZ13 | 铅(0.25) |
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Statistical of elements and contents exceeding the standard in crop seeds in the southern suburbs of Baotou
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农作 物 | BCFCd | BCFPb | BCFZn | | 农作 物 | BCFCd | BCFPb | BCFZn | 玉米 | 1.68 | 0.28 | 9.23 | | 葱 | 1.66 | 0.05 | 1.64 | 向日葵 | 59.26 | 4.70 | 56.56 | | 圆白菜 | 0.60 | 0.04 | 0.65 |
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Statistical of crop seed bioconcentration factors in the southern suburbs of Baotou%
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农作物 | 成人 | HI | CR/10-4 | 儿童 | HI | CR/10-4 | HQCd | HQPb | HQZn | HQCd | HQPb | HQZn | 玉米 | 0.011 | 0.205 | 0.128 | 0.344 | 0.22 | 0.032 | 0.610 | 0.381 | 1.023 | 0.25 | 向日葵 | 0.240 | 0.972 | 0.454 | 1.666 | 7.53 | 1.072 | 4.342 | 2.026 | 7.441 | 8.41 | 葱 | 0.036 | 0.106 | 0.060 | 0.202 | 0.33 | 0.046 | 0.135 | 0.076 | 0.258 | 0.36 | 圆白菜 | 0.012 | 0.069 | 0.034 | 0.115 | 0.11 | 0.016 | 0.088 | 0.043 | 0.147 | 0.12 |
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Statistical of non-carcinogenic and carcinogenic risk index for adults and children
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Comparison of non-carcinogenic and carcinogenic health risk indices between adults and children
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[1] |
王蕊, 陈楠, 张二喜. 基于总量与形态的矿区周边土壤重金属生态风险与健康风险评估[J]. 环境科学, 2022, 43(3):1546-1557.
|
[1] |
Wang R, Chen N, Zhang E X. Ecological and health risks assessment based on the total amount and speciation of heavy metals in soils around mining areas[J]. Environmental Science, 2022, 43(3):1546-1557.
|
[2] |
兰玉书, 石梏岐, 杨刚, 等. 磷石膏堆场周边水稻土重金属污染特征及稻米的人体健康风险分析[J]. 地球环境学报, 2021, 12(2):224-231.
|
[2] |
Lan Y S, Shi G Q, Yang G, et al. Status of heavy metal pollution in paddy soil and human health risk assessment of rice around phosphogypsum yard[J]. Journal of Earth Environment, 2021, 12(2):224-231.
|
[3] |
张云, 胡正生, 王艳, 等. 某氧化铜矿尾矿区重金属污染特征及农作物健康风险评价[J]. 有色金属工程, 2021, 11(4):125-132.
|
[3] |
Zhang Y, Hu Z S, Wang Y, et al. Heavy metals pollution characteristics and crop health risk assessment around a copper oxide tailings pond[J]. Nonferrous Metals Engineer, 2021, 11(4):125-132.
|
[4] |
陈晓鸿, 李强, 喇优抓. 南盘江流域曲靖段土壤及农作物中重金属污染特征与生态风险评价[J]. 安徽农学通报, 2020, 26(15):126-132.
|
[4] |
Chen X H, Li Q, La Y Z, et al. The pollution characteristics and ecological risk assessment of heavy metals in the crops and soils from the Qujing section of the Nanpan River[J]. Anhui Agronomy Bulletin, 2020, 26(15):126-132.
|
[5] |
袁余洋, 刘属灵, 刘永林, 等. 重庆江津区自产大米和玉米中重金属的健康风险评价[J]. 湖南农业大学学报:自然科学版, 2021, 47(6):677-683.
|
[5] |
Yuan Y Y, Liu S L, Liu Y L, et al. The heavy metal content characteristic and human health risk assessment of rice and corn in Jiangjin District,Chongqing[J]. Journal of Hunan Agricultural University:Natural Sciences, 2021, 47(6):677-683.
|
[6] |
黄钟霆, 易盛炜, 陈贝贝, 等. 典型锰矿区周边农田土壤—农作物重金属污染特征及生态风险评价[J]. 环境科学, 2022, 43(2):975-984.
|
[6] |
Huang Z T, Yi S W, Chen B B, et al. Pollution properties and ecological risk assessment of heavy metals in farmland soils and crops around a typical manganese mining area[J]. Environmental Science, 2022, 43(2):975-984.
|
[7] |
肖作义, 赵鑫, 孟庆学, 等. 内蒙古某尾矿库土壤重金属污染健康风险评价与来源解析[J]. 有色金属工程, 2020, 10(12):135-142.
|
[7] |
Xiao Z Y, Zhao X, Meng Q X, et al. Health risk assessment and source analysis of heavy metal pollution in the soil of a tailings dam in Inner Monglia[J]. Nonferrous Metals Engineering, 2020, 10(12):135-142.
|
[8] |
张璐瑶, 赵科理, 傅伟军. 电子垃圾拆解区土壤—农作物系统中镉元素的空间分布特征及其风险评价[J]. 环境科学, 2021, 42(9):4432-4440.
|
[8] |
Zhang L Y, Zhao K L, Fu W J. Spatial distribution characteristics and risk assessment of cadmium pollution in soil-crops system of an e-waste dismantling area[J]. Environmental Science, 2021, 42(9):4432-4440.
|
[9] |
王晓睿, 高秉婷, 吴永贵, 等. 粉煤灰堆场基质-农作物系统中重金属生态风险及健康风险评价[J]. 有色金属:矿山部分, 2021, 73(6):116-124.
|
[9] |
Wang X R, Gao B T, Wu Y G, et al. Ecological risk and health risk assessment of heavy metals in fly ash yard matrix-crop system[J]. Nonferrous Metals:Mine Part, 2021, 73(6):116-124.
|
[10] |
杨剑洲, 王振亮, 高健翁, 等. 海南省集约化种植园中谷物、蔬菜和水果中重金属累积程度及健康风险[J]. 环境科学, 2021, 42(10):4916-4924.
|
[10] |
Yang J Z, Wang Z L, Gao J W, et al. Accumulation and health risk of heavy metals in cereals,vegetables,and fruits of intensive plantations in Hainan Province[J]. Environmental Science, 2021, 42(10):4916-4924.
|
[11] |
Huang Y, Chen Q, Deng M, et al. Heavy metal pollution and health risk assessment of agricultural soils in a typical periurban area in southeast China[J]. Journal of Environmental Management, 2018, 207:159-168.
|
[12] |
张庆辉, 王贵, 朱晋, 等. 包头南郊污灌区农田表层土壤重金属潜在生态风险综合评价[J]. 西北农林科技大学学报:自然科学版, 2012, 40(7):181-192.
|
[12] |
Zhang Q H, Wang G, Zhu J, et al. Comprehensive evaluation of potential ecological risk of heavy metals in the sueface irrigation area of southern suburbs in Baotou[J]. Journal of Northwest A&F University:Natural Science Edition, 2012, 40(7):181-192.
|
[13] |
王沛东, 段海龙, 谢燕, 等. 内蒙古河套平原小麦产区土壤元素生物有效性研究[J]. 安全与环境工程, 2015, 22(6):72-78.
|
[13] |
Wang P D, Duan H L, Xie Y, et al. Research on biological availability of soil elemnts in wheat-growing regions in Hetao Plain,Inner Mongolia[J]. Safety and Environmental Engineering, 2015, 22(6):72-78.
|
[14] |
刘菊梅, 栗利曼, 沈渭寿, 等. 黄河包头段灌区玉米重金属污染及人群健康风险评价[J]. 南方农业学报, 2015, 46(9):1591-1595.
|
[14] |
Liu J M, Li L M, Shen W S, et al. Heavy metal pollution of corn and human health risk assessment in Baotou section of the Yellow River[J]. Journal of Southern Agriculture, 2015, 46(9):1591-1595.
|
[15] |
栗利曼, 刘菊梅, 沈渭寿, 等. 包头工业区蔬菜重金属富集及人群健康评价[J]. 中国蔬菜, 2016(1):54-59.
|
[15] |
Li L M, Liu J M, Shen W S, et al. Heavy metal enrichment and population health risk assessment of vegetables in Baotou industrial district[J]. China Vegetables, 2016(1):54-59.
|
[16] |
黄哲, 曲世华, 白岚, 等. 包头城区土壤重金属空间分布特征及污染评价[J]. 环境工程, 2017, 35(5):149-153.
|
[16] |
Huang Z, Qu S H, Bai L, et al. Spatial distribution characteristics and pollution assessment of heavy metal soils in urban areas of Baotou[J]. Environmental Engineering, 2017, 35(5):149-153.
|
[17] |
赵颖, 王飞, 乔鹏明. 污灌区农田土壤—作物体系重金属复合污染及健康风险评价[J]. 江苏农业科学, 2020, 48(23):270-274.
|
[17] |
Zhao Y, Wang F, Qiao P M, et al. Heavy metal compound pollution and health risk assessment of farmland soil-crop system in sewage irrigation area[J]. Jiangsu Agricultural Department, 2020, 48(23):270-274.
|
[18] |
李武江, 朱四喜, 王众, 等. 西南山地煤矿区耕地土壤—农作物重金属富集及健康风险评价[J]. 中国无机分析化学, 2021, 11(5):22-30.
|
[18] |
Li W J, Zhu S X, Wang Z, et al. Heavy metals enrichment and health risk assessment of cultivated soil-crops in mountainous coal mining areas of southwest China[J]. Chinese Journal of Inorganic analytical Chemistry, 2021, 11(5):22-30.
|
[19] |
中华人民共和国生态环境部. GB 15618—2018土壤环境质量农用地土壤污染风险管控标准(试行)[S]. 2018.
|
[19] |
Ministry of Ecology and Environment of the People's Republic of China. GB 15618—2018 Soil environmental quality.Agricultural land soil pollution risk control standard(Trial)[S]. 2018.
|
[20] |
中华人民共和国国家卫生和计划生育委员会, 国家食品药品监督管理总局. GB 2762—2017食品安全国家标准食品中污染物限量标准[S]. 2017.
|
[20] |
National Health and Family Planning Commission of the People's Republic of China,China food and drug administration. GB 2762—2017 National standard for food safety[S]. 2017.
|
[21] |
胡永兴, 宿虎, 张斌, 等. 土壤重金属污染及其评价方法概述[J]. 江苏农业科学 2020, 48(17):33-39.
|
[21] |
Hu Y X, Su H, Zhang B, et al. Overview of soil heavy metal pollution and its evaluation methods[J]. Jiangsu Agricultural Sciences 2020, 48(17):33-39.
|
[22] |
周亚龙, 王乔林, 王成文, 等. 雄安新区企业周边农田土壤—作物系统重金属污染风险及累积效应[J]. 环境科学, 2021, 42(12):5977-5987.
|
[22] |
Zhou Y L, Wang Q L, Wang C W, et al. Risk and cumulative effect of heavy metal pollution in farmland soil-crop system around enterprises in Xiong'an New Area[J]. Environmental Science, 2021, 42(12):5977-5987.
|
[23] |
许佳霖, 武帅, 梁鹏, 等. 高虹镇稻米中重金属污染状况及健康风险评价[J]. 浙江农林大学学报, 2017, 34(6):983-990.
|
[23] |
Xu J L, Wu S, Liang P, et al. Heavy metal pollution and health risk assessment of rice in Gaohong Town[J]. Journal of Zhejiang A&F University, 2017, 34(6):983-990.
|
[24] |
陈丹, 周于杰, 章佳文, 等. 基于什邡市农田土壤中铅、锌的人体健康风险评估[J]. 农业环境科学学报, 2018, 37(12):2687-2693.
|
[24] |
Chen D, Zhou Y J, Zhang J W, et al. Human health risk assessment based on lead and zinc in farmland soil of Shifang City[J]. Journal of Agricultural Environmental Sciences, 2018, 37(12):2687-2693.
|
[25] |
陈凤, 董泽琴, 王程程, 等. 锌冶炼区耕地土壤和农作物重金属污染状况及风险评价[J]. 环境科学, 2017, 38(10):4360-4369.
|
[25] |
Chen F, Dong Z Q, Wang C C, et al. Heavy metal pollution status and risk assessment of cultivated soil and crops in zinc smelting area[J]. Environmental Science, 2017, 38(10):4360-4369.
|
[26] |
郭展翅, 周葆华, 赵宽, 等. 长江中下游某地区农田镉形态特征及污染评价[J]. 安庆师范大学学报:自然科学版, 2021, 27(1):96-101.
|
[26] |
Guo Z C, Zhou B H, Zhao K, et al. Speciation characteristics and pollution assessment of cadmium in farmland in a certain area in the middle and lower reaches of the Yangtze River[J]. Journal of Anqing Normal University:Natural Science Edition, 2021, 27(1):96-101.
|
[27] |
李如忠, 潘成荣, 陈婧, 等. 基于盲数理论的城市表土与灰尘重金属污染健康风险评价模型[J]. 环境科学学报, 2013, 33(1):276-285.
|
[27] |
Li R Z, Pan C R, Chen J, et al. Health risk assessment model of heavy metal pollution in urban topsoil and dust based on blind number theory[J]. Journal of Environmental Sciences, 2013, 33(1):276-285.
|
[28] |
段小丽. 中国人群暴露参数手册[M]. 北京: 中国环境出版社, 2013:262.
|
[28] |
Duan X L. Manual of exposure parameters of Chinese population[M]. Beijing: China Environment Press, 2013:262.
|
[29] |
李良忠, 张丽娟, 胡国成, 等. 西南某矿区家庭灰尘中重金属的暴露及其健康风险评价[J]. 生态毒理学报, 2017, 12(5):235-242.
|
[29] |
Li L Z, Zhang L J, Hu G C, et al. Exposure of heavy metals in household dust in a mining area in southwest China and its health risk assessment[J]. Acta Ecotoxicologica Sinica, 2017, 12(5):235-242.
|
[30] |
强瑀, 李英菊, 罗谦, 等. 典型铅锌矿区耕地土壤团聚体重金属含量与农作物含量相关性及其风险评价[J]. 环境科学, 2021, 42(12):5967-5976.
|
[30] |
Qiang J, Li Y J, Luo Q, et al. Relationship characteristics and risk assessment of heavy metal contents in soil aggregates and in crops around a typical Pb-Zn mining area[J]. Environmental Science, 2021, 42(12):5967-5976.
|
[31] |
陈继平, 钞中东, 任蕊, 等. 陕西关中富硒土壤区农作物重金属含量相关性及安全性评价[J]. 西北地质, 2021, 54(2):273-281.
|
[31] |
Chen J P, Chao Z D, Ren R, et al. Correlation and safety evaluation of heavy metals in crops in selenium-rich soil area of Guanzhong,Shaanxi Province[J]. Northwest Geology, 2021, 54(2):273-281.
|
[32] |
郑堃, 任宗玲, 覃小泉, 等. 韶关工矿区水稻土和稻米中重金属污染状况及风险评价[J]. 农业环境科学学报, 2018, 37(5):915-925.
|
[32] |
Zheng K, Ren Z L, Qin X Q, et al. Pollution status and risk assessment of heavy metals in paddy soil and rice in Shaoguan industrial and mining area[J]. Journal of Agricultural Environmental Sciences, 2018, 37(5):915-925.
|
[33] |
周亚龙, 杨志斌, 王乔林, 等. 雄安新区农田土壤—农作物系统重金属潜在生态风险评估及其源解析[J]. 环境科学, 2021, 42(4):2002-2015.
|
[33] |
Zhou Y L, Yang Z B, Wang Q L, et al. Potential ecological risk assessment and source analysis of heavy metals in farmland soil-crop system in Xiong'an New Area[J]. Environmental Science, 2021, 42(4):2002-2015.
|
[1] |
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[2] |
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|
|
|
|