Chinese soil element background value
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, … 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 ...
Chinese soil element background value
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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 ... 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).
http://en.cgsjournals.com/article/doi/10.11720/wtyht.2024.0302 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 …
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 ...
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 …
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. • … irctc login pnr checkWebJun 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 … irctc login official websiteWebNov 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 … irctc login online train reservationWebBACKGROUND CONCENTRATIONS OF ELEMENTS 701 Figure 1. Number of soil and surficial matter sampling locations in the "administrative" provinces of mainland China. … order different colored pointe shoeshttp://www.zghjkx.com.cn/EN/Y2024/V40/I10/4522 irctc login online train ticket bookinghttp://www.zghjkx.com.cn/EN/abstract/abstract17562.shtml irctc login next generation ticket bookingWebAug 15, 2024 · The background values of most of the trace elements were lower than those in Chinese soil, the upper continental crust, global shales and global preindustrial … irctc login portal for customers