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- W2370149217 abstract "The paper is attempting to report the study results of its investigation on the heavy-metal pollution features and their effects on the growth of some vegetables around a lead-zinc smelter in Yunnan. The samples we have gained from some wild vegetable( Capsella bursa-pastoris and a green manure( Vicia sativa L.) from the farmlands around the said lead-zinc smelter. We have done carefully planned analysis of the normal and DTPA-extractable contents of such heavy metals as Pb,Zn,Cu and Cd)in the samples. The results of our investigation and analysis indicate that:( 1) The farmlands around the lead-zinc smelter have been moderately or severely polluted by heavy metals. To be sure,Cd is the top element that has heavily polluted the soils of the farmlands,that is,1. 94 to 8. 30 times as much as the standard EQSSC level III( short for the environmental quality standard for soil of China( GB 15618—1995) via the Nemerow integrated index.( 2) The content rate of Pb,Zn and Cd,including that of the maximum and average in Capsella bursa-pastoris( L.) Medik,also proves higher than that in Vicia sativa L. Taking Capsella bursa-pastoris( L.) Medik for example,the content rate of Cd turns out to be greater than 1,whereas its transferring factor for Pb,Zn and Cd is greater than or close to 1.( 3) Noticeable or conspicuous positive correlation with Cd and Pb content rate has been found between the ground-surface plants and the root ones for Vicia sativa L. and Capsella bursa-pastoris( L.) Medik in the aforementioned soils. Thus,it can be concluded that the heavy metal pollution and contamination proves to be serious in the farmlands around the smelter with Cd being the chief pollution maker. The heavy metals content rates in Vicia sativa L. and Capsella bursa-pastoris( L.) Medik turn out rather high,with the content degree of Capsella bursa-pastoris( L.) Medik being heavier than Vicia sativa L." @default.
- W2370149217 created "2016-06-24" @default.
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- W2370149217 date "2015-01-01" @default.
- W2370149217 modified "2023-09-28" @default.
- W2370149217 title "Pollution characteristics of heavy metals in soils,green manures and wild vegetables around a lead-zinc smelter" @default.
- W2370149217 hasPublicationYear "2015" @default.
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