Results 11 to 20 of about 52,331 (100)

Research on the Influence of Weather Patterns on Ozone Concentration: A Case Study in Tianjin

Atmosphere, 2022
Ozone (O3) is an important secondary substance that plays a significant role in atmospheric chemistry and climate change. Although O3 is essential in the stratosphere, it is harmful to human health in the troposphere, where this study was conducted.
Yuan Li, Jiguang Wang, Liwei Li, Yu Bai, Jingyun Gao, Lei He, Miao Tang, Ning Yang   +7 more
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Spatio-temporal variation of vegetation and its correlation with soil moisture in the Yellow River Basin

Shuiwen dizhi gongcheng dizhi, 2023
Analyzing the temporal and spatial changes of vegetation and its correlation with soil moisture and quantitatively revealing the impact of soil moisture on vegetation growth are of certain significance for drought monitoring and ecological protection ...
Mengmeng GAO, Xiaolei LI, Nan YANG, Yi WANG, Qiong LIU, Zixin ZHAO   +5 more
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Polybrominated diphenyl ethers (PBDEs) in sediment and fish tissues from Lake Chaohu, central eastern China

Archives of Environmental Protection, 2015
Polybrominated diphenyl ethers (PBDEs) levels in environmental media have increased over the last 20-25 years in the world. In aquatic environments PBDEs were found to be accumulated along food chain and Endocrine disruptors toxicity. In this study PBDEs
Yang Suwen, Fu Qiang, Teng Man, Yang Jing   +3 more
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Evaluation of Data Quality on the Detection of Heavy Metals in Soils by Atomic Absorption Spectrometry or Atomic Fluorescence Spectrometry and X-ray Fluorescence Spectrometry in Ecological Environment Monitoring

Yankuang ceshi, 2019
BACKGROUND In current ecological environmental monitoring, the standard methods used to determine the total contents of inorganic elements, such as heavy metals in soil, include atomic absorption spectrometry (AAS), atomic fluorescence spectrometry (AFS)
TIAN Zhi-ren, FENG Xue, JIANG Xiao-xu, LI Zong-chao, LI Yu, XIA Xin   +5 more
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Suggestions for the Construction of the Regional Monitoring System of the Yellow Sea Large Marine Ecosystem

Haiyang Kaifa yu guanli, 2022
In order to promote the ecological environment protection and ecological disaster control of Yellow Sea, this paper analyzed the background of ecological environment and problems, and put forward suggestions for the construction of regional monitoring ...
Xiaocheng WANG, Chuan JIA, Yi ZHANG, Qingqing JIN, Zizhu WANG, Yongjian LIU, Yan WANG, Kuishuang SHAO, Shouqiang WANG, Chunjiang GUAN, Hao GUO   +10 more
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Laboratory simulation on drifting of hazardous chemical substance [PDF]

E3S Web of Conferences, 2021
The continuously increase of hazardous chemicals transportation leads to a high risk of chemicals leakage. Researches on drifting of chemical substances are of vital importance in damage reducing.
Wang Xing, Wei Lai, Li Xiuren, Yang Fan, Liu Ying, Wang Chunhui, Liu Yunlong   +6 more
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Distribution Characteristics of Heavy Metals in Soils of the Anhui Section of the Huaihe River Basin

Yankuang ceshi, 2018
How to scientifically reflect the soil environmental quality of a large area through limited soil point monitoring is a major direction of current research.
QIAN Zhen-bing, SUN Li-jian, XU Sheng, CHEN Chao, DAI Xiao-feng   +4 more
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Research on the Precision Evaluation Standard for Determination of Zn in Soils

Yankuang ceshi, 2021
BACKGROUND The current technical specification, or standard method, to obtain the precision control level of a certain test item is to send the standard sample and a certain number of actual samples, with a known concentration level, to specific ...
LI Yu, TIAN Zhi-ren, JIANG Yue, XIA Xin
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Influence of Four Kinds of Acid Systems on Determination of 16 Metal Elements in Solid Wastes by ICP-MS with Microwave Acid Digestion

Yankuang ceshi, 2015
Microwave acid digestion is the most important pretreatment method for the determination of metal elements in solid wastes by Inductively Coupled Plasma-Mass Spectrometry(ICP-MS). Different acid systems have significant influences on the results. In this
XUAN Zhao-fei, XU Shao-cai, FANG Xian-wen, TAN Pi-gong   +3 more
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Quantifying semi-volatile organic contaminants in solution by internal standard addition method requires prompt addition of the internal standards

Scientific Reports, 2020
The precision and accuracy of quantifying semi-volatile organic compounds (SVOCs) in solution by GC/MS, particularly when volume errors are unpredictable or difficult to control, are improved by utilizing internal standards (IS).
Ochan Otim, Jesus Rocha
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