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- W2377457820 abstract "In order to characterize the plant availability of arsenic(As) in the soil of a Panax notoginseng plantation in Wenshan(Yunnan Province,China),six chemical extracting agents including 0.5 mol·L-1 NaH2PO4,H2O,0.2 mol·L-1 H3PO4,0.062 5 mol·L-1 EDTA(pH=7),1.0 mol·L-1 NH4Cl,and 0.05 mol·L-1(NH4)2SO4 were selected to extract As from soil samples.The correlation between the As concentrations of the soil extracts and the total As in the soil were analyzed.The results showed that the As concentrations in the soil solutions extracted by 0.5 mol·L-1 NaH2PO4,0.2 mol·L-1 H3PO4 and 0.05 mol·L-1(NH4)2SO4 were correlated well with the total As concentration in the soils,with correlation coefficients of 0.835 9,0.817 7,and 0.881,respectively.The extract efficiencies of 0.5 mol·L-1 NaH2PO4 and 0.2 mol·L-1 H3PO4 were 6% and 11%,respectively,which were much higher than that of 0.05 mol·L-1(NH4)2SO4.The correlation of As concentrations between the extract and different parts of the plant is important for selecting appropriate chemical extracting agents.The As concentrations in the 0.5 mol·L-1 NaH2PO4 and 0.05 mol·L-1(NH4)2SO4 extracts were significant positively correlated with the As concentrations in the taproot,fiber and stem of P.notoginseng,whereas that of the 0.2 mol·L-1 H3PO4 extract was significantly positively correlated only with the taproot and fiber portion.In conclusion,NaH2PO4(0.5 mol·L-1) and H3PO4(0.2 mol·L-1) both could be selected to characterize soil bio-effective As on Panax Notoginseng." @default.
- W2377457820 created "2016-06-24" @default.
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- W2377457820 date "2011-01-01" @default.
- W2377457820 modified "2023-09-23" @default.
- W2377457820 title "Screening of Chemical Extracting Agents for Characterizing Soil Bio-effective Arsenic on Panax Notoginseng" @default.
- W2377457820 hasPublicationYear "2011" @default.
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