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qhd511鐵桿木蟲 (著名寫手)
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[求助]
繼續(xù)請(qǐng)英語(yǔ)地道的專家?guī)兔?rùn)色,謝謝!
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Twelve portions of samples above mentioned were added into 50mL colorimetric tubes, 10.0g of each sample was weighed. Then they were divided into 6 groups. The final series of concentrations of the samples were 0, 5.0, 10.0,20.0, 50.0, and 100.0 mg kg-1(2 parallel per sample). At the same time, the same method above was also employed with S. The results for the determination of O in these samples were listed in Table 1. From Table 1 we concluded that a good agreement between U and S when the content of sample was below 20.0 mg kg-1, however, the results of U were superior to those of S when the contents were above 20.0 mg kg-1. 分別取10.00g 上述樣品12份,分6組加入到50mL比色管中,加入O標(biāo)準(zhǔn)溶液使測(cè)定的O濃度分別為0、5.0、10.0、20.0、50.0、100.0mg/kg(每組2份平行);同樣取10.00g 上述樣品12份,分6組采用S方法提取,加標(biāo)方法同U方法。 兩種方法比對(duì)數(shù)據(jù)見表1。測(cè)定結(jié)果表明,當(dāng)測(cè)定結(jié)果≤20.0mg/kg時(shí),兩種提取方法均能滿足分析要求,無(wú)明顯差異;當(dāng)測(cè)定結(jié)果>20.0mg/kg時(shí),U方法測(cè)定的結(jié)果優(yōu)于S方法。 |
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鐵桿木蟲 (著名寫手)
至尊木蟲 (職業(yè)作家)
至尊木蟲 (職業(yè)作家)
至尊木蟲 (職業(yè)作家)
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