In this research, soil samples were collected from Shandong Peninsula Blue Economic Zone to investigate heavy metal pollutions in this region and to evaluate the potential ecological risks of heavy metal pollutants ba...In this research, soil samples were collected from Shandong Peninsula Blue Economic Zone to investigate heavy metal pollutions in this region and to evaluate the potential ecological risks of heavy metal pollutants based on Hakanson Potential Ecological Risk Indexes. According to the results, Hg was the primary heavy metal pollutant in Blue Economic Zone, followed by Cd, Cu, and Pb as prevalent pollutants. Heavy metals ranked in order of their pollution degrees are: Hg>Cd>Cu>Pb>Zn>Cr>As;the potential ecological risks of heavy metals follow the order of Hg>Cd>As>Pb>Cu>Cr>Zn. Heavy metal pollutions did exist in this region to a certain extent, and the percentage of potential ecological risk in “strong” and “severe” degree reached up to 13.75%. This composite risk characteristic was subject to the restriction of Hg and Cd mainly distributed in Laizhou-Zhaoyuan- Yantai, Muping-Rushan Goldmine, and other densely-populated regions, threatening the safety production of crops. The combined effects of geological background and human activities, e.g. gold mining and domestic pollutants, were the main causes of high potential ecological risks of heavy metals in local environment.展开更多
Food is becoming increasingly a world problem. Determining factors in food consumption are price, income, culture, desires, preferences, and food safety. Price and income are main factors but not the only guide for co...Food is becoming increasingly a world problem. Determining factors in food consumption are price, income, culture, desires, preferences, and food safety. Price and income are main factors but not the only guide for consumers. Food safety is becoming an equal factor in importance just as price and income in food consumption. Many individuals consider that potential risk of food consumption is too high compared to health benefits that they may provide. In recent times, because of food-related health crises, consumers are losing their confidence. Consumer confidence is lost and in order to regain the lost confidence, governments are setting high food standards, however, millions of people fall ill and economic cost is high. This article intends to provide an overview of the current food safety and consumer behavior, based on reviews of the existing literature.展开更多
文摘In this research, soil samples were collected from Shandong Peninsula Blue Economic Zone to investigate heavy metal pollutions in this region and to evaluate the potential ecological risks of heavy metal pollutants based on Hakanson Potential Ecological Risk Indexes. According to the results, Hg was the primary heavy metal pollutant in Blue Economic Zone, followed by Cd, Cu, and Pb as prevalent pollutants. Heavy metals ranked in order of their pollution degrees are: Hg>Cd>Cu>Pb>Zn>Cr>As;the potential ecological risks of heavy metals follow the order of Hg>Cd>As>Pb>Cu>Cr>Zn. Heavy metal pollutions did exist in this region to a certain extent, and the percentage of potential ecological risk in “strong” and “severe” degree reached up to 13.75%. This composite risk characteristic was subject to the restriction of Hg and Cd mainly distributed in Laizhou-Zhaoyuan- Yantai, Muping-Rushan Goldmine, and other densely-populated regions, threatening the safety production of crops. The combined effects of geological background and human activities, e.g. gold mining and domestic pollutants, were the main causes of high potential ecological risks of heavy metals in local environment.
文摘Food is becoming increasingly a world problem. Determining factors in food consumption are price, income, culture, desires, preferences, and food safety. Price and income are main factors but not the only guide for consumers. Food safety is becoming an equal factor in importance just as price and income in food consumption. Many individuals consider that potential risk of food consumption is too high compared to health benefits that they may provide. In recent times, because of food-related health crises, consumers are losing their confidence. Consumer confidence is lost and in order to regain the lost confidence, governments are setting high food standards, however, millions of people fall ill and economic cost is high. This article intends to provide an overview of the current food safety and consumer behavior, based on reviews of the existing literature.
