2 results match your criteria: "Harbin Center for Integrated Natural Resources Survey[Affiliation]"
Source Apportionment and Risk Assessment of Potentially Toxic Elements Based on PCA and PMF Model in Black Soil Area of Hailun City, Northeast China.
Toxics
September 2024
Harbin Center for Integrated Natural Resources Survey, China Geological Survey, Harbin 150086, China.
Article Synopsis
- - The study evaluated potentially toxic elements (PTEs) in China's northeastern black soil, collecting 304 soil samples to analyze contamination levels for elements like arsenic and lead.
- - Results revealed average concentrations of various PTEs and identified four main pollution sources: natural, irrigation, fuel, and fertilizer, with fertilizer being a significant concern.
- - The research indicated a slight ecological risk and low human health risks, stressing the importance of managing fertilizer-related PTEs, particularly cadmium, arsenic, and mercury for policymakers.
A new method for estimating ore grade based on sample length weighting.
Sci Rep
April 2023
Anyang Institute of Technology, Anyang, Henan, People's Republic of China.
Estimation of ore grade is very important for the value evaluation of ore deposits, and it directly affects the development of mineral resources. To improve the accuracy of the inverse distance weighting (IDW) method in ore grade estimation and reduce the smoothing effect of the IDW method in grade estimation, the weight calculation method involved in the IDW method was improved. The length parameter of the ore sample was used to calculate the weight of the IDW method.
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