http://www.igsnrr.cas.cn/xwzx/jxlwtj/201011/P020101104391081976901.pdf

A review of heavy metal contaminations in urban soils, urban road dusts and agricultural soils from China.

https://ira.lib.polyu.edu.hk/bitstream/10397/81757/1/Palansooriya_Soil_Amendments_Immobilization.pdf

Soil amendments for immobilization of potentially toxic elements in contaminated soils: A critical review.

Heavy metal pollution of coal mine-affected agricultural soils in the northern part of Bangladesh

Heavy metal contamination is a globally recognized environmental issue, threatening human life very seriously. Increasing population and high demand for food resulted in release of various contaminants into environment that finally contaminate the food chain. Edible plants are the major source of diet, and their contamination with toxic metals may result in catastrophic health hazards. Heavy metals affect the human health directly and/or indirectly; one of the indirect effects is the change in plant nutritional values. Previously, a number of review papers have been published on different aspects of heavy metal contamination. However, no related information is available about the effects of heavy metals on the nutritional status of food plants. This review paper is focused upon heavy metal sources, accumulation, transfer, health risk, and effects on protein, amino acids, carbohydrates, fats, and vitamins in plants. The literature about heavy metals in food plants shows that both leafy and nonleafy vegetables are good accumulators of heavy metals. In nonleafy vegetables, the bioaccumulation pattern was leaf > root ≈ stem > tuber. Heavy metals have strong influence on nutritional values; therefore, plants grown on metal-contaminated soil were nutrient deficient and consumption of such vegetables may lead to nutritional deficiency in the population particularly living in developing countries which are already facing the malnutrition problems.

The uptake and bioaccumulation of heavy metals by food plants, their effects on plants nutrients, and associated health risk: a review.

Heavy metal contamination in surface sediments of Yangtze River intertidal zone: an assessment from different indexes.

Multivariate analysis of heavy metal contamination in urban dusts of Xi’an, Central China

Black carbon (BC) is defined as the broad continuum of recalcitrant materials produced from biomass burning to fossil fuel combustion. From charred plant residues and charcoal to soot and graphitic black carbon, the chemical and physical properties of this recalcitrant material vary broadly. The charred plant residues and charcoal formed at low temperatures; soot formed during the condensation of hot combustion gases; and graphitic black carbon may have a rock-derived source. There are two mechanisms, photochemical and microbial breakdown, for BC degradation. BC may represent a significant sink in the global carbon cycle. Annual global formation rates for black carbon were estimated to be 50~270 Tg (10~(12)g), among which about 10% may come from fossil fuel combustion. Fine black carbon can be transported a long distance and deposited in soils and sediments, building up a significant fraction of organic carbon buried in soils and sediments. BC may put a great influence on the content of atmospheric CO_(2 )and O_(2 )over geological time scales. BC analytical methods were categorized into five classes: microscopic, optical thermal, chemical, thermal, and molecular markers. We discuss challenges for future research, and point out that standard reference materials are urgently needed, BC analysis should be further defined into molecular level, and the research of global geochemical cycle of different types of BC should be enhanced.

Han Yongming

Papers

Multivariate analysis of heavy metal contamination in urban dusts of Xi’an, Central China

Black carbon in the environments and its global biogeochemical cycle

Research Progress on Reconstruction of Paleofire History