This paper focuses on the demonstration study, through related analysis on various samples, on the relation between PPI and CPI, based on the resident consumption price index and the price index of industrial products...This paper focuses on the demonstration study, through related analysis on various samples, on the relation between PPI and CPI, based on the resident consumption price index and the price index of industrial products in Shandong province since 1989. The paper also analyzes the relation among different price index’s, their transfer regulation and the degree of influence on one another. The study result shows that resident consumption price index relates the most to the factory price index of daily living products, the second to the factory price index of production materials, and the least to the purchase price index of raw materials, fuel and power. The price change of energy and raw materials at the upper level will naturally be reflected in the factory price of industrial products at the lower level and price of daily living products in the end. It is a long influence process from the price of raw materials for industrial production to the factory price of industrial products, including production materials and daily living products, and finally to the resident consumption price. The price influence process somehow lags behind the production and consumption process for a certain period. The rise and fall of industrial products price index is the earliest signal for economic development trend and to which the government and the industry must attach high importance.展开更多
Soil contamination in the vicinity of the Dabaoshan Mine, Guangdong Province, China, was studied through determi- nation of total concentrations and chemical speciation of the toxic metals, Cu, Zn, Cd, and Pb, using i...Soil contamination in the vicinity of the Dabaoshan Mine, Guangdong Province, China, was studied through determi- nation of total concentrations and chemical speciation of the toxic metals, Cu, Zn, Cd, and Pb, using inductively coupled plasma mass spectrometry. The results showed that over the past decades, the environmental pollution was caused by a combination of Cu, Zn, Cd, and Pb, with tailings and acid mine drainage being the main pollution sources affecting soils. Significantly higher levels （P ≤ 0.05） of Cu, Zn, Cd, and Pb were found in the tailings as compared with paddy, garden, and control soils, with averages of 1486, 2516, 6.42, and 429 mg kg^-1, respectively. These metals were continuously dispersed downstream from the tallings and waste waters, and therefore their concentrations in the paddy soils were as high as 567, 1 140, 2.48, and 191 mg kg^-1, respectively, being significantly higher （P ≤ 0.05） as compared with those in the garden soils. The results of sequential extraction of the above metals from all the soil types showed that the residual fraction was the dominant form. However, the amounts of metals that were bound to Fe-Mn oxides and organic matter were relatively higher than those bound to carbonates or those that existed in exchangeable forms. As metals could be transformed from an inert state to an active state, the potential environmental risk due to these metals would increase with time.展开更多
文摘This paper focuses on the demonstration study, through related analysis on various samples, on the relation between PPI and CPI, based on the resident consumption price index and the price index of industrial products in Shandong province since 1989. The paper also analyzes the relation among different price index’s, their transfer regulation and the degree of influence on one another. The study result shows that resident consumption price index relates the most to the factory price index of daily living products, the second to the factory price index of production materials, and the least to the purchase price index of raw materials, fuel and power. The price change of energy and raw materials at the upper level will naturally be reflected in the factory price of industrial products at the lower level and price of daily living products in the end. It is a long influence process from the price of raw materials for industrial production to the factory price of industrial products, including production materials and daily living products, and finally to the resident consumption price. The price influence process somehow lags behind the production and consumption process for a certain period. The rise and fall of industrial products price index is the earliest signal for economic development trend and to which the government and the industry must attach high importance.
基金Project supported by the Guangdong Environmental Protection Bureau of China (No.2001-27)Guangdong Provincial Department of Science and Technology,China (No.2004A30308002)State Key Laboratory of Environment Geochemistry,Chinese Academy of Sciences
文摘Soil contamination in the vicinity of the Dabaoshan Mine, Guangdong Province, China, was studied through determi- nation of total concentrations and chemical speciation of the toxic metals, Cu, Zn, Cd, and Pb, using inductively coupled plasma mass spectrometry. The results showed that over the past decades, the environmental pollution was caused by a combination of Cu, Zn, Cd, and Pb, with tailings and acid mine drainage being the main pollution sources affecting soils. Significantly higher levels （P ≤ 0.05） of Cu, Zn, Cd, and Pb were found in the tailings as compared with paddy, garden, and control soils, with averages of 1486, 2516, 6.42, and 429 mg kg^-1, respectively. These metals were continuously dispersed downstream from the tallings and waste waters, and therefore their concentrations in the paddy soils were as high as 567, 1 140, 2.48, and 191 mg kg^-1, respectively, being significantly higher （P ≤ 0.05） as compared with those in the garden soils. The results of sequential extraction of the above metals from all the soil types showed that the residual fraction was the dominant form. However, the amounts of metals that were bound to Fe-Mn oxides and organic matter were relatively higher than those bound to carbonates or those that existed in exchangeable forms. As metals could be transformed from an inert state to an active state, the potential environmental risk due to these metals would increase with time.
