Chinese soil element background value
WebThe 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 ... 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 …
Chinese soil element background value
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http://en.cgsjournals.com/article/doi/10.11720/wtyht.2024.0302 http://www.zghjkx.com.cn/EN/abstract/abstract17562.shtml
WebBACKGROUND CONCENTRATIONS OF ELEMENTS 701 Figure 1. Number of soil and surficial matter sampling locations in the "administrative" provinces of mainland China. … 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.
Webfactors affect the background value of heavy metals in soils? ... Cd and Hg constituted the five most important heavy metal contaminants in Chinese soils. 3. Soil background values and factors that affect them ‘Soil environment background values ’ (SEBV) are the concentration of elements or components in soil with little influence from ... WebApr 11, 2024 · Jo ur na l P re -p ro of Journal Pre-proof 41 Graphical abstract Jo ur na l P re -p ro of Journal Pre-proof 42 Highlights: ·The carbonate bedrock in southwest China has a high background value of Cd. ·Crops grown on high geological background areas have low potential risk. ·Rootstalk and fruit vegetables are recommended for cultivation ...
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 ...
WebDec 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 many times does the bible talk about joyWebIn 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 ... how many times does the euromillions rolloverWebMar 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 … how many times does the blood circulateWebFeb 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, … how many times does the cell splitWebJun 24, 2024 · The 1994 map of Chinese soil mercury distribution (Fig. 1a) was obtained from the atlas titled “The atlas of soil environmental background value in the People’s Republic of China” 1994, page … how many times does the citric acid cycle runWebApr 12, 2024 · According to the Chinese Soil Occurrence Classification, the soil type in the study area is Allitic-Udic ferrosols, according to world reference basic of soil resources, the soil type is ferric acid soil, which developed from the Quaternary laterite parent material. ... With KBr as the background value, the spectra were collected in the range ... how many times does the earth rotateWebDec 15, 2024 · We mainly discuss on a macro-scale the variation features of Chinese soil’s background value versus reference value, including:① to study the ratio feature … how many times does the cell divide