Evaluation and Source of Heavy Metal Pollution in Surface Soils in Typical Alpine Agricultural Areas of Qinghai Province [PDF]
, 2023 BACKGROUNDHeavy metal pollution in soils is often the result of multiple genetic sources and action paths. Simple identification of the sources of heavy metals is not enough to provide sufficient information for the control of regional heavy metal ...
Jianqiang LI +5 more
core +1 more source
What do we know about opportunities and challenges for localities from Cannabis legalization?
Review of Policy Research, Volume 39, Issue 2, Page 143-169, March 2022., 2022 Abstract This review article assays the scholarly and popular press literature on the opportunities and challenges the growing legalized cannabis industry offers U.S. local governments and communities. Localities are an important focus because in many states with legalized cannabis, local jurisdictions have authority to prevent or condition its ...
Parisa Kavousi +11 more
wiley +1 more source
Evaluation and Migration Path Analysis of Soil Heavy Metal Pollution in a Metal Mining Area of Qinling Mountain [PDF]
, 2023 BACKGROUNDThe Qinling Mountains are rich in metal mineral resources, but the problem of mine ecological environment damage left over from long-term high-intensity and large-scale mining has seriously affected the regional ecosystem in the Qinba area ...
Hao AI +5 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2023 近岸海域的环境污染特征和污染来源是区域海洋环境保护的两大关键问题。以浙南瑞安市近岸海域为例，于2020年5月开展16个站位的海洋环境调查和表层海水采样，通过室内分析测试，共获得12项水质参数（盐度、溶解氧、化学需氧量、无机氮、活性磷酸盐、汞、镉、铅、铬、砷、锌、铜）数据，采用污染评价、多元数理统计分析（通过SPSS实现）及空间异质性分析（通过ArcGIS实现）等方法，较深入地探究了瑞安市近岸海域环境污染的空间特征和污染来源。研究结果表明，瑞安市近岸海域水质总体情况良好，各水质参数变异系数较大 ...
张哲宣(ZHANG Zhexuan) +7 more
doaj +1 more source
Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Typical Soil Profiles of Muchuan County, Sichuan Province [PDF]
, 2023 BACKGROUNDSoil is a precious resource for human survival and social development. The quality of the soil environment is impacted by a variety of issues due to the social economy’s rapid expansion, and the issue of heavy metal contamination in farmed land
Bixia LIAO, Ling HE, Wenling SHEN
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2014 以杭州市7条主要河道21个监测断面1循环年的水质监测数据为依据，运用污染指数法和模糊评价法对市区主要河道水质进行综合评价，同时探讨2种水质评价方法的评价效果.结果表明：①杭州市区主要河道均存在不同程度的污染，主要污染物是TN、-N和TP，即氮磷营养盐，而有机污染相对较小；②污染指数法评价结果与实际水体的标准差距较小，与真实情况吻合较好；③当水质为劣V类时，模糊评价结论偏保守，而当某项指标严重超标时则易使评价结果偏重；④污染指数法更适合杭州市区河道水环境的评价.
HEPing(何平) +5 more
doaj +1 more source
Accumulation and Source Apportionment of Soil Heavy Metals in Molybdenum-Lead-Zinc Polymetallic Ore Concentration Area of Luanchuan [PDF]
, 2023 BACKGROUNDThe Luanchuan Mo-Pb-Zn polymetallic ore concentration area, located in Henan Province, China, has a long-term history of mining activities. Heavy metals have been liberated during mining, which induces heavy metal pollution of water and soil ...
Danli CHEN +6 more
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Distribution Characteristics and Source Analysis of “Three Nitrogen” in Shallow Groundwater in Hailun Area of Heilongjiang Province [PDF]
, 2023 BACKGROUNDWith the increase of population, urbanization development, the large discharge of industrial wastewater and the excessive application of agricultural nitrogen fertilizer, the problem of “three nitrogen” (nitrate nitrogen, ammonia nitrogen, and ...
Lijun LI, Qiang LIU
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A study of polycyclic aromatic hydrocarbons as pollution sources in air(空气中多环芳烃的污染源研究)
Zhejiang Daxue xuebao. Lixue ban, 2001 介绍了空气中多环芳烃的污染源研究历史，讨论了各种源解析方法和各类污染源的研究进展，评价了各种源解析方法的优缺点，共引文献39篇.
WANGJing(王静), ZHULi-zhong(朱利中)
doaj +1 more source
Shuitu Baochi Xuebao, 2023 基于"十三五"期间(2016—2020年)滇池外海晖湾中、罗家营、观音山东、观音山中、观音山西、白鱼口、海口西和滇池南等8个采样点位底泥中7种重金属监测值,利用地质累计指数法及潜在生态危害指数法等评价方法,对重金属进行污染特征分析及生态风险评价。结果表明,As、Hg、Cr、Pb、Cd、Cu和Zn平均含量对比云南省土壤背景值分别超标0.46,4.70,0.47,0.73,3.47,1.17,1.13倍,且时空分布存在差异性。时间变化上,As、Cd、Cu、Zn含量总体呈下降趋势。空间分布上,As、Hg ...
张国涵 +5 more
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