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Determination of Cation Content in Papermaking Reconstituted Tobacco Sheet by On-line Dilution-ion Chromatography
Received:October 09, 2022  
DOI：10.11980/j.issn.0254-508X.2023.09.008
Key Words:papermaking reconstituted tobacco sheet  determination of cation content  ion chromatography  quantitative loop on-line dilution
Fund Project:中国烟草总公司云南省公司科技计划重大项目（2021530000241009）。
Author NameAffiliationPostcode
CAI Jieyun Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
WANG Huiping Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
LIU Wei Technology Center of China Tobacco Yunnan Industrial Co.， Ltd.， Kunming， Yunnan Province，650023 650023
SHANG Shanzhai Technology Center of China Tobacco Yunnan Industrial Co.， Ltd.， Kunming， Yunnan Province，650023 650023
GU Jianlong Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
ZHANG Xiaowei Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
ZHANG Ke Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
WANG Chunqiong Yunnan Tobacco Quality Inspection & Supervision Station， Kunming，Yunnan Province，650106 650106
JIANG Xue Hongyunhonghe Tobacco （Group） Co.， Ltd.， Kunming Cigarette Factory， Kunming， Yunnan Province，650231 650231
LI Chao* Technology Center of China Tobacco Yunnan Industrial Co.， Ltd.， Kunming， Yunnan Province，650023 650023
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Abstract:In this study， a method was developed for the determination of cations， such as Lithium， Sodium， Ammonia， Potassium， Magnesium and Calcium， in paper-making reconstituted tobacco sheet using quantitative loop on-line dilution-ion chromatography （IC）， with external-standard quantitative method. When 0.1 g of sample was extracted with 50 mL of 0.01 mol/L hydrochloric acid for 30 min at room temperature with shaking， the LODs and the LOQs of target cations could achieve 0.011~0.031 μg/mL and 0.034~0.094 μg/mL， respectively， while the determination coefficients were more than 0.998. The Intra-assay repeatability and Inter-assay reproducibility were 2.14%~3.86% and 2.57%~4.52%， respectively， indicating the better repeatability and reproducibility. With three different cation concentrations， the recovery rates for the target cations were in the range of 95.8% and 107.3%， and the relative standard deviation （RSD） was in the range of 1.53~4.51. The results showed that this method was convenient and fast， suitable for large throughput detection， of which the accuracy of detection results was significantly better than that of manual dilution method， with the precision significantly improved. It was proved that the types and content of cations in the paper-making reconstituted tobacco sheet samples were different， and the content varied widely.
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