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排序方式: 共有104条查询结果,搜索用时 15 毫秒
91.
博斯腾湖流域地下水重金属污染的人体健康风险评估 总被引:2,自引:0,他引:2
在新疆博斯腾湖流域绿洲灌区采集67个浅层地下水样品,测定其中Cu、Mn、Cd、Cr、Ni和Zn等6种重金属元素的含量,采用Nemerow综合污染指数对地下水中重金属污染程度进行评价,借助US EPA健康风险评价模型对地下水中重金属污染的潜在健康风险进行评价。结果表明:(1)地下水中各元素平均含量大小顺序依次为:MnZnCuNi CrCd,各元素平均含量均未超出国家标准的限值;(2)研究区地下水中各重金属元素单项污染指数平均值从大到小依次为:Cd(2.04)、Mn(0.69)、Ni(0.45)、Cr(0.24)、Zn(0.07)、Cu(0.03)。综合污染指数的变化范围在0.23~2.22之间,平均值为0.73,呈现轻微污染;(3)健康风险评价结果表明,地下水中6种重金属对成人的潜在非致癌健康风险HI为7.83E-011,表明暴露的个体不太可能有明显的不良健康影响;对儿童的潜在非致癌健康风险HI为1.05E+011,表明研究区地下水重金属可能对当地儿童的健康产生不利影响,有进一步研究的必要性。 相似文献
92.
Amenity Migration and Public Lands: Rise of the Protected Areas 总被引:1,自引:0,他引:1
Environmental Management - Rural amenity migration, or the relocation for quality of life purposes as opposed to monetary enhancement, has been occurring for decades and has been particularly... 相似文献
93.
Aljohny Bassam Oud Almaliki Abdullah Abdulaziz Ali Anwar Yasir Ul-Islam Mazhar Kamal Tahseen 《Journal of Polymers and the Environment》2021,29(10):3252-3262
Journal of Polymers and the Environment - In this research work, a green method of using Saussurea costus extract for the synthesis of silver nanoparticles (AgNPs) is developed. Analysis of the... 相似文献
94.
昌吉市不同景观土壤动物群落结构 总被引:1,自引:0,他引:1
为了解不同利用方式土地的春季土壤动物群落结构,于2007年3月至6月对昌吉市周围的5种土地,即天然林、人工林、草地、农田、废弃地进行取样调查,共捕获土壤动物2 046只,隶属3门10纲24目.分析表明:土壤动物优势类群为昆虫纲(Insecta)、蛛形纲(Arachnida)、弹尾纲(Collembola),常见类群为腹足纲(Gastropoda)、寡毛纲(Oligochaeta)、软甲纲(Malacostraca)和双尾纲(Diplura)等,其他均为稀有类群.5种不同利用方式土地土壤动物群落物种多样性和均匀度指数有一定的差异,草地的物种多样性最大,废弃地的多样性最小,体现了群落的复杂性与多样性.垂直分布显示土壤动物具有明显的表聚现象.根据土壤动物群落聚类的结果,可将5中土地分为2组,即草本植物种植型、林地型.显示了土壤动物群落对土壤利用方式的响应情况. 相似文献
95.
96.
Vehicular Contamination of Dust in Amman, Jordan 总被引:1,自引:0,他引:1
Anwar Jiries 《The Environmentalist》2003,23(3):205-210
Road dust from four traffic areas; the city center, tunnels, closed car parks and a residential area was collected from the urban part of Amman and analyzed for polycyclic aromatic hydrocarbons (PAH) and heavy metals content.Total PAH and selected heavy metals were in the range of a few gg–1. The distribution of PAH was controlled by the arid climatic conditions. PAH distribution in the street dust tended to be dominated by 4- and 6-ring PAHs with significantly less 2- and 3-ring PAH reflecting volatilization of the latter under the hot and dry climatic conditions. However, both PAH and heavy metal concentrations were affected by the densities and conditions of traffic activity at the various sites. Generally, the highest concentrations of both PAH and heavy metals were found in the tunnels and the lowest in the residential areas.Significant correlation between PAH and total organic matter (TOM), lead and cadmium indicated that PAH and heavy metals in street dust of heavily traffic areas are strongly affected by automobile exhaust emission and that those in the residential areas have another source, most probably street material erosion. 相似文献
97.
Husna Hussain Anwar Shah Mohib Hamayun Muhammad Qadir Muhammad Iqbal Amjad 《Environmental science and pollution research international》2022,29(11):15501-15515
Environmental Science and Pollution Research - In modern agricultural practice, heavy metal (HM) contamination is one of the main abiotic stress threatening sustainable agriculture, crop... 相似文献
98.
Ye Qing Asmi Fahad Anwar Muhammad Azfar Zhou Rongting Siddiquei Ahmad Nabeel 《Environmental science and pollution research international》2022,29(5):6463-6478
Environmental Science and Pollution Research - The COVID-19 pandemic has negatively affected the economic, social, and psychological aspects globally. COVID-19 can possibly spread through municipal... 相似文献
99.
Atif Jahanger Ashar Awan Ahsan Anwar Tomiwa Sunday Adebayo 《Natural resources forum》2023,47(3):484-503
Electricity consumption is a crucial factor in the environmental pollution process, and therefore, its impact needs to be carefully considered by policymakers. This study investigates the relationship between energy consumption, electricity generation, natural resource utilization, and environmental pollution in BRICS nations, which have a substantial share in global resource consumption. To this end, we employed a novel methodology, namely the Method of Moment Quantile Regression (MMQR), for the time period between 1990 and 2018, within the framework of the Environmental Kuznets Curve (EKC) theory. The study's outcome shows that natural resources and renewable energy are efficacious and significant in curbing environmental degradation among the sample countries. The investigation reveals a positive correlation between electricity consumption and environmental degradation, thereby highlighting this vital resource's role in exacerbating the BRICS nations’ ecological footprint. The findings from this research can provide crucial insights for policymakers to achieve sustainable development and carbon neutrality in these countries. 相似文献
100.
Ali Syeda Nazish Baqar Mujtaba Mumtaz Mehvish Ashraf Uzma Anwar Muhammad Naveed Qadir Abdul Ahmad Sajid Rashid Nizami Abdul-Sattar Jun Huang 《Environmental science and pollution research international》2020,27(7):7328-7340
Environmental Science and Pollution Research - The elimination of persistent organic pollutants (POPs) obsolete pesticides stockpiles, particularly the organochlorine pesticides (OCPs), is one of... 相似文献