Chinese soil element background value

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August undefined, 2024

WebApr 6, 2024 · The highest Cd content was found in the surface layer of PM26, with a maximum value of 1.50 mg/mg, which was much higher than the background values of Chinese soils and the background values of Anhui soils (0.134 mg/kg). In contrast, a decreasing trend of As content was observed with the increasing depth of the study area. WebApr 10, 2024 · The third group of elements consisted of As and Pb. The average concentration of As was much higher than the background value, and the pollution level and ecological risk caused by As were higher. The concentration of Pb was slightly lower than the background value (21.4 mg kg −1), and its corresponding impact was smaller. …

Source analysis and ecological risk assessment of heavy …

WebJun 22, 2024 · The average values of Cu, Zn, Pb, Cd, and Ni are 2.92 times, 2.19 times, 6.36 times, 7.78 times, and 1.34 times of the background values of soil elements in … WebFeb 1, 2024 · Distribution of soil element BVs. Fig. 1 shows the BV distribution of 12 elements in 20 soils in China. The average BV of these elements in 20 soils varied greatly from 0.05 mg/kg to 668.35 mg/kg, among which the most abundant element was Mn, … north bend wa weather noaa

Geochemical background value (mg/kg). Download …

WebAbstract. Mean concentrations of 62 elements, pH, organic matter and grain size have been computed for soil samples from 4,095 locations … WebJun 22, 2024 · In formula and , C n i and B i selected the average value of every single element in layer A soil of Hebei Province as the element background value 39, and the element background values of Cu, Zn ... WebBACKGROUND CONCENTRATIONS OF ELEMENTS 701 Figure 1. Number of soil and surficial matter sampling locations in the "administrative" provinces of mainland China. … north bend weather noaa

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Potentially Toxic Element Contamination in Soils Affected by the ...

WebMar 1, 2014 · PDF On Mar 1, 2014, Cheng Hangxin，Li Kuo and others published Geochemical background and baseline value of chemical elements in urban soil in China Find, read and cite all the research you ... WebDec 1, 2024 · In 1990, a large-scope and systematic survey for SEBVs was carried out across the whole of China, covering all 29 provinces, cities and autonomous regions. These survey data were summarized in a book entitled China Soil Element Background Value (China National Environmental Monitoring Centre, 1990). From 2005, the MEP-PRC and … north bend webcamhttp://www.zghjkx.com.cn/EN/abstract/abstract17562.shtml north bend wa weather underground

"WebApr 11, 2024 · The pH of the original soil was 7.96, the value of organic matter was 14.82 g/kg, the value of CEC was 17.34 cmol/kg, the exchange acid was 54.30 mmol/kg and the background concentration of nickel ... " - Chinese soil element background value

Chinese soil element background value

Sustainability Free Full-Text Source Identification of Cd ... - MDPI

WebThe revised background concentrations of the soils in Beijing are proposed to be 7.09 mg/kg for As, 0.119 mg/kg for Cd, 29.8 mg/kg for Cr, 18.7 mg/kg for Cu, 26.8 mg/kg for … WebDec 1, 2024 · Soil background values and evolving soil standards in China is discussed. • The UK's soil survey, background values and standards is compared to China. • …

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http://www.zghjkx.com.cn/EN/Y2024/V40/I10/4522 WebDec 19, 2024 · China National Environmental Monitoring Center (1990) Chinese soil element background value. China Environmental Science Press, Beijing. Google Scholar Gholizadeh A, Borůvka L, Saberioon MM et al (2015) Comparing different data preprocessing methods for monitoring soil heavy metals based on soil spectral features.

WebMar 31, 2015 · TL;DR: The results showed that the average Cd concentration was 0.27 mg/kg, higher than its background value, indicating that Cd had been introduced into arable soil by human activity. Abstract: Cadmium (Cd) concentration in arable soil has drawn broad public attention due to its direct effect on Cd concentration in food. … WebDec 3, 2024 · The background value is defined as the normal concentration of an element in an unpolluted natural environment, the basis for evaluating the pollution degree and ecological risk of a particular element in the soil and sediment (Fukue et al. 2006; de Paula Filho et al. 2015).

WebMar 26, 2024 · The results indicate the following: (1) The concentration of Cd and Pb in soil exceed the background value of Chinese soil elements. (2) Cd is significantly … WebOct 25, 2024 · The background element is the alkaline soil elements in the background value from Chinese soil elements [ 34 ]. The enrichment factor EF was classified into …

WebWhat is the meaning of background value of soil element in Chinese and how to say background value of soil element in Chinese? background value of soil element Chinese meaning, background value of soil element的中文，background value of soil element的中文，background value of soil element的中文，translation, …

WebNov 10, 2024 · The average content of Cd in some surface water sediments was 0.64 mg/kg, which exceeded the risk screening values for soil contamination of agricultural land of China and was 17.1 times the background value of soil environment in Inner Mongolia; the average content of As was 16.64 mg/kg, which exceeded the soil quality standard of … north bend weather forecastWebDec 15, 2024 · The research on the soil’s geochemical background value and reference value is an important basic work in the field of geosciences. The publication of Soil Geochemical Parameters of China is an important result achieved on the basis of the China’s nation-wide multi-target regional geochemical survey and the high quality and … how to replace sling on suncoast patio chairWebIn the old landfill leachate, the concentration of manganese was 15.71 mg/L, which was the highest among the studied metals. The concentration of heavy metals in the soil of the old landfill was ... north bend weather 10 day forecastWebRather, both background and baseline values calculated should be determined separately for each element in geologically different regions; otherwise, the limit values for contaminated soils may be lower than the natural concentrations (background levels) calculated for an extensive area (Gałuszka, Citation 2007). The factors that influence the ... north bend weather hourlyhttp://en.cgsjournals.com/article/doi/10.11720/wtyht.2024.0302 how to replace slipped slate roof tilesWeb"soil element" in Chinese : 地盘要素 "element value" in Chinese : 元素值 "average background value" in Chinese : 背景平均值 "background color value" in Chinese : 背 … how to replace slings on patio chairsWebThe results showed that the range of the environmental background concentrations of REE in topsoil of Shenzhen was 23.66~1246.26mg/kg, the arithmetic average value was 285.99mg/kg, which was higher than that in soil of China and Guangdong province. The top soil of Shenzhen was enriched-type of light rare earth element, and the spatial ... how to replace smoking behavior