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Zheng X.,Chenzhou Municipal Tobacco Company | Zeng W.,Chenzhou Municipal Tobacco Company | Zeng W.,Hunan Agricultural University | Zeng W.,Changsha Municipal Tobacco Company | And 6 more authors.
Acta Tabacaria Sinica

Quinclorac residues in tobacco and soil were determined using high performance liquid chromatography coupled to photodiode array detector (HPLC-PDAD). Quinclorac residues were extracted by 0.05 mol/L sodium hydroxide solution from tobacco and soil samples into acetyl acetate via liquid-liquid partition, and cleaned up with a SPE cartridge packed with active carbon and florisil. The average recoveries of quinclorac ranged from 79.4% to 94.9% in tobacco and from 92.9% to 108.2% in soil, respectively, at the spiked concentration levels of 0.05-2.00 mg/L. Relative standard deviation ranged from 8.1% to 12.9% in tobacco and from 5.5% to 9.6% in soil, respectively. It was proved that the method was easy, cheap, fast, sensitive, reproducible and practical. Source

Deng S.,Hunan University | Liu W.,Hunan University | Zeng S.,Hunan University | He M.,Changsha Municipal Tobacco Company | And 2 more authors.
Acta Tabacaria Sinica

Current situation of information management in tobacco purchase and manufacturing was investigated based on field study in Changsha. In tackling problems such as lack of information talents, insufficient financial support, limited information channel and low efficient use of information platform, an information management system featuring both good hard and soft infrastructure should be established with a large pool of information talents and improved information database. Information management should be made most of in modern tobacco agriculture so as to render some preference for the development of informationization of the whole industry. Source

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