Content of Detection & Analysis in our journal

Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Reference Manager ProCite BibTeX RefWorks Toggle Thumbnails Select Comparative Analysis of Calcium Carbonate and the Identification by FTIR Spectrometer in Marine-derived Shell TCM DU Cheng-zhi, DENG Jia-gang, HOU Xiao-tao, DU Zheng-cai, HAO Er-wei HUBEI AGRICULTURAL SCIENCES    2018, 57 (17): 84-87.   DOI: 10.14088/j.cnki.issn0439-8114.2018.17.022 Abstract （451）      PDF （1622KB）（316）       Knowledge map    Save To detect the calcium carbonate and IR in marine-derived shell TCM,and then compare the contents of calcium carbonate and IR in the three herbs from different areas to provide scientific basis for the quality evaluation and qualitative identification of the three herbs. The content of calcium carbonate was detected by EDTA titrimetric method;applying IR to analyses the chemical composition difference of marine-derived shell TCM from different areas. The calcium carbonate content of Clam Shell was ranged from 79.74% to 98.34%. The calcium carbonate content of Os Sepiae was ranged from 81.07% to 94.51% and the calcium carbonate content of oysters was ranged from 66.71% to 96.92%. The IR analysis shows that Clam Shell、Os Sepiae、oysters were all consisted of the major Calcium carbonate and a slight amount of organisms. There are no significant differences among the contents of calcium carbonate and IR of Clam Shell、Os Sepiae and oysters from different areas. It fails to reflect the inner quality and work on qualitative identification of the three herbs on the whole with the content of calcium carbonate and IR. Reference | Related Articles | Metrics Select Study on the Simultaneous Measurement of Three Residual Level of Pesticides such as Dimethoate in Dendrobium aurantiacum Using GC-MS/MS TANG Zhi-kang, CHEN Wen-qiu, YU Min-ling, RAO Chun-mei, Yu Ma, HOU Da-bin, SHU Xiao-yan, HUANG Jing HUBEI AGRICULTURAL SCIENCES    2018, 57 (17): 88-92.   DOI: 10.14088/j.cnki.issn0439-8114.2018.17.023 Abstract （385）      PDF （1481KB）（156）       Knowledge map    Save To establish a quantitative method for the simultaneous measurement of the residual level of three pesticides in Dendrobium aurantiacum by GC-MS/MS. The samples were extracted by acetonitrile and purify by Cleanert TPH column. The samples were then tested by GC-MS/MS. Information on relative retention time and mass charge ratio was used for qualitative analysis. The peak area obtained by secondary ion MS of dimethoate（125.0/79.0） was used as the reference peak to establish a method using dimethoate as the reference substance to determinate there sidual quantity of three pesticides in Dendrobium aurantiacum by GC-MS/MS. When the injection quantity of the sample containing dimethoatea, dichlorvos and chlorpyrifosis in the range of 0.1~1.0 ng, there is a good linear relationship between the injection quantity and peak area. Limit of quantification（LOQ） of dimethoate, dichlorvos and chlorpyrifos are 1.399×10-2、2.279×10-4、1.757×10-4 ng; The average recovery rates of dimethoate, dichlorvos and chlorpyrifos are 95.4%, 95.0% and 94.7%. the method is simple, accurate, rapid and is appropriate for the quantification of residual quantity of dimethoate,dichlorvos and chlorpyrifos in Dendrobium aurantiacum. Reference | Related Articles | Metrics page Page 1 of 11 Total 22 records First page Prev page Next page Last page