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detecting concentration
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  检测浓度
    The lowest detecting concentration of aidicarb in soil and apple was 0.004 and 0.004mg/kg,respectively. On the level of 0.1~2.0mg/kg,the average recovery and variation coefficient of aldicarb and its main metabolites were 84.7~109.7% and 1.0~7.8%, respectively.
    涕灭威在土壤和苹果中的最低检测浓度分别为0004、0004毫克/公斤,空白样品添加01~20毫克/公斤,涕灭威及其代谢物的平均回收率和变异系数分别为847~1097%及10~78%。
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  检出浓度
    The lowest detection limit of instrument for fipronil and its metabolites was 5×10-12g. The lowest detecting concentration was 0.0005mg/kg. The average recovery and coefficient of variation of this method were 85.4%~95.8% and 2.3%~12.0%, respectively.
    该方法仪器最低检出量为5×10 -12g,最低检出浓度为0.0005mg/kg,平均回收率为85.4 %~95.8 % ,变异系数为2.3 %~12.0 %
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  detecting concentration
Assessing the compatibility of many trace elements by conventional methods that rely on detecting concentration changes is extremely difficult.
      
Therefore, 23Na-MRI has the potential to non-invasively differentiate viable from non-viable tissue by detecting concentration changes of intra- and extracellular sodium.
      


A hybridoma cell line secreting monoclonal antibody againtst deoxynivalenol (DON) was established by fusion of spleen cells with myeloma. The antibody was designated 3D7 with the subtype IgG1. Meanwhile, indirect competitive enzyme-linked immunosorbent assay for determination of DON in wheat was developed with this antibody. The linear range for detection of DON was 5-1 000 ng/ml and the minimum detected concentration was 5 ng/ml. The mean recovery rates and CV% from sample spiked with 5-1 000 ng/ml of...

A hybridoma cell line secreting monoclonal antibody againtst deoxynivalenol (DON) was established by fusion of spleen cells with myeloma. The antibody was designated 3D7 with the subtype IgG1. Meanwhile, indirect competitive enzyme-linked immunosorbent assay for determination of DON in wheat was developed with this antibody. The linear range for detection of DON was 5-1 000 ng/ml and the minimum detected concentration was 5 ng/ml. The mean recovery rates and CV% from sample spiked with 5-1 000 ng/ml of DON were 96. 6-107. 3% and 5. 1-14. 2%. respectively. Analysis of 10 samples for DON showed positive results, and the concentration ranged from 56. 4-1002. 0 ppb.

用B淋巴细胞杂交瘤技术制备了能稳定分泌抗脱氧雪腐镰刀菌烯醇(DON)单克隆抗体的杂交瘤细胞株,命名为3D7.3D7的亚类为lgG_1.运用该抗体,建立了检测小麦中DON的间接竞争性酶联免疫吸附测定法.该法最低检出量为5ng/ml,敏感范围为5—1000ng/ml;平均回收率为96.6—107.3%;精密度为6.2—13.3%.运用该方法,检测了10份小麦样品.均为阳性,其含量为56.4—1002.0ppb.

The residual analysis method of aldicarb and its main metabolites in soil and apple was discussed in this paper.The samples extracted with acetone,were oxidized by peroxy acetic acid and then extracted with dichloro-methane,were finally detected by GC-FPD.The lowest detecting concentration of aidicarb in soil and apple was 0.004 and 0.004mg/kg,respectively.On the level of 0.1~2.0mg/kg,the average recovery and variation coefficient of aldicarb and its main metabolites were 84.7~109.7% and 1.0~7.8%, respectively....

The residual analysis method of aldicarb and its main metabolites in soil and apple was discussed in this paper.The samples extracted with acetone,were oxidized by peroxy acetic acid and then extracted with dichloro-methane,were finally detected by GC-FPD.The lowest detecting concentration of aidicarb in soil and apple was 0.004 and 0.004mg/kg,respectively.On the level of 0.1~2.0mg/kg,the average recovery and variation coefficient of aldicarb and its main metabolites were 84.7~109.7% and 1.0~7.8%, respectively.

本文概述了涕灭威及其代谢物在苹果和土壤中残留量的分析方法。样品以丙酮提取,过氧乙酸氧化,二氯甲烷萃取,气谱火焰光度检测器(GC/FPD)测定。涕灭威在土壤和苹果中的最低检测浓度分别为0004、0004毫克/公斤,空白样品添加01~20毫克/公斤,涕灭威及其代谢物的平均回收率和变异系数分别为847~1097%及10~78%。

The residual analysis method of anilofos of Benefiter 30%WP in rice was discussed in this paper. Samples were extracted with acetone and then extracted with dichloromethane, purified on column,and finally detected by GC-FPD.The lowest detection limit for anilofos was 0.5ng.The lowest detecting concentration in rice field water and soil was 0.005mg/L and 0.01mg/kg respectively, in rice straw, rice, rice hull was 0.05mg/kg.The average recovery and coefficient of variation of this method were 81.89%~99.80%...

The residual analysis method of anilofos of Benefiter 30%WP in rice was discussed in this paper. Samples were extracted with acetone and then extracted with dichloromethane, purified on column,and finally detected by GC-FPD.The lowest detection limit for anilofos was 0.5ng.The lowest detecting concentration in rice field water and soil was 0.005mg/L and 0.01mg/kg respectively, in rice straw, rice, rice hull was 0.05mg/kg.The average recovery and coefficient of variation of this method were 81.89%~99.80% and 0.50%~6.59% respectively.

本文确立必宁特30%可湿性粉剂中莎稗磷在水稻中的残留量的气相色谱分析方法。水稻样本用丙酮提取后,萃取到二氯甲烷中,柱净化后,用气相色谱火焰光度(FPD)检测器检测。本方法对必宁特30%可湿性粉剂中莎稗磷在稻田水、稻田土、稻苗、稻壳、稻米的平均回收率范围为81.89%~99.80%,变异系数为0.50%~6.59%,最小检出量为0.5ng,在稻田水、稻田土中最小检出浓度分别为0.005mg/L,0.01mg/kg。在稻苗、稻壳、稻米中的最小检出浓度均为0.05mg/kg。

 
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