卡尔·费休滴定法测定日用消费品中含水量及影响因素探讨

doi:10.3969/j.issn.1001-1803.2020.04.012

Abstract

Abstract:

As a standard method in China, Karl Fischer titration has been widely used to determine moisture content in products, which has the advantages of high accuracy, rapid and convenient operation. But the accuracy of this method is affected by many external factors when complex samples are determined. The Karl Fischer titration volumetric method was applied to the determination of moisture content in 8 categories of 85 consumer products. The influence of various factors, such as ionic interference in the sample, excessive water content of samples, surface contamination of electrodes and so on during the process of water determination were analyzed, and then discussed the corresponding solutions. The purpose is to provide a more accurate and reasonable water content test method for consumer products.

Key words: Karl Fischer titration, consumer products, moisture content

CLC Number:

C913.33

SHEN Zheng-chao,ZHENG Ya-bin,GAO Mei-ping,NIE Lei,LI Guo-ao,DU Zhen-xia. Determination of moisture content in consumer products by Karl Fischer titration and its interfering factors[J].China Surfactant Detergent & Cosmetics, 2020, 50(4): 282-286.

Figures/Tables 6

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Fig. 1

References 18

[1]	Jiang Yan, Zhang Ruohong . Product classification of consumer goods[J]. Quality and Standardization, 2014 ( 10) : 48-50.
[2]	Zhu Wei, Lin Guojing, Zhang Guimin . Formulation principle and application technology of personal toiletries (I) - Formulation principle and performance evaluation of shampoo[J]. China Surfactant Detergent & Cosmetics, 2004 ( 5) : 323-326.
[3]	Zhu Wei, Sun Peng, Zhang Guimin . Formulation principle and application technology of personal toiletries (Ⅱ) : Formulation principle and performance evaluation of skin care products[J]. China Surfactant Detergent & Cosmetics, 2004 ( 6) : 394-397.
[4]	Zhu Wei, Sun Peng, Zhang Guimin . Formulation principle and application technology of personal toiletries (Ⅲ) : Formulation principle and performance evaluation of sunscreen skin care products[J]. China Surfactant Detergent & Cosmetics, 2005 ( 1) : 52-54.
[5]	United States Environmental Protection Agency. Determination of volatile organic compounds (VOC) in consumer products and reactive organic compouds in aerosol coating products: CARB Method 310[S]. California: 2011.
[6]	Wang Aiping, Gong Xin, Liu Xin , et al. Sample processing method for Karl Fischer’s determination of moisture[J]. Physical and Chemical Testing (Chemical Papers) , 2016,52(3) : 369-372.
[7]	Xia Wenqian, Wang Xiaoyu, Wei Wenhui . Discussion on the influencing factors of Karl Fischer titration in measuring water content[J]. Green Technology, 2011 ( 9) : 199-200.
[8]	Chang Miao, Wang Chongchen, Zhang Jiahua , et al. Study on Karl Fischer coulomb method for determining water content in atmospheric fine particles[J]. Drought Monitoring, 2018,32(2) : 75-79, 91.
[9]	Morgano M A, Milani R F, Martins M C T , et al. Determination of water content in Brazilian honeybee-collected pollen by Karl Fischer titration[J]. Food Control, 2011,22(10) : 1604-1608. doi: 10.1016/j.foodcont.2011.03.016
[10]	Daniel I Hădărugă, Costescu C I, Laura Corpaş , et al. Differentiation of rye and wheat flour as well as mixtures by using the kinetics of Karl Fischer water titration[J]. Food Chemistry, 2016,195:49-55. doi: 10.1016/j.foodchem.2015.08.124 pmid: 26575711
[11]	Nie Y, Lu C, Zhou L , et al. Determination of moisture in red agent of abandoned chemical weapon by Japan using Karl Fischer titration[J]. Procedia Environmental Sciences, 2012,16:183-187. doi: 10.1016/j.proenv.2012.10.025
[12]	Sébastien N Ronkart, Paquot M, Fougnies C , et al. Determination of total water content in inulin using the volumetric Karl Fischer titration[J]. Talanta, 2006,70(5) : 1006-1010. doi: 10.1016/j.talanta.2006.02.024 pmid: 18970874
[13]	Shi Zhanchong, Meng Fanzhong, Fu Bin . Karl Fischer volumetric method for the determination of moisture in morpholine products[J]. Chemical Science and Technology, 2012,20(2) : 50-52.
[14]	Wang H, Ma K, Zhang W , et al. Certification of the reference material of water content in water saturated 1-octanol by Karl Fischer coulometry, Karl Fischer volumetry and quantitative nuclear magnetic resonance[J]. Food Chemistry, 2012,134(4) : 2362-2366. doi: 10.1016/j.foodchem.2012.04.027
[15]	Liu Wei, Zhang Wenjie, Cai Shuying , et al. Karl Fischer coulomb method for the determination of water content in aniline[J]. Shandong Chemical Industry, 2019,48(6) : 83-86.
[16]	Yuan Jiawei, Chen Zhi, Cai Jinan , et al. Karl Fischer method for determination of water content of maltitol[J]. Shandong Chemical Industry, 2018,47(7) : 73-75.
[17]	Liu Fengqin, Shen Yuhua, Pan Zhouxu . Karle Fischer method for the determination of moisture content in waterborne coatings and emulsions[J]. China Building Waterproofing, 2015 ( 20) : 14-16, 23.
[18]	Desmedt B, Canfyn M, Pype M , et al. HS-GC-MS method for the analysis of fragrance allergens in complex cosmetic matrices[J]. Talanta, 2015,131:444-451. doi: 10.1016/j.talanta.2014.08.006 pmid: 25281125

样品	处理前含水量/%	处理后含水量/%	相对误差 /%
烫发产品A（软化液）	76.93	74.61	3.06
烫发产品A（定型液）	87.04	85.37	1.94
烫发产品B（软化液）	79.83	79.66	0.21
烫发产品B（定型液）	87.04	85.37	1.94
消毒液A	86.63	67.23	25.22
消毒液B	85.43	65.91	25.80

模拟样品含水量/%	实际含水量均值/%	相对误差/%
4.00	4.24	0.24
7.00	7.02	0.02
10.00	10.19	0.19
40.00	39.02	0.98
70.00	68.66	1.32
100.00	101.43	1.43

测试结果/%						RSD/%
1 2 3 4 5 6						RSD/%
53.87	53.74	52.86	51.97	51.21	53.05	1.95

加标量/%	实际样品含水量/%	测试结果/%						RSD/%	加标回收率/%
加标量/%	实际样品含水量/%	1	2	3	4	5	6	RSD/%	加标回收率/%
10	66.66	77.20	77.34	76.90	77.46	77.33	77.70	2.49	106.64
20 30	59.26 51.85	80.61 82.46	80.30 83.66	80.98 82.98	80.12 83.90	80.10 83.63	80.55 83.50	1.69 1.70	104.25 105.02

	含水量测试结果/%						RSD/%
	1	2	3	4	5	6
电极清洗前	60.60	61.24	58.28	61.19	60.10	62.81	2.47
电极清洗后	53.87	53.74	52.86	51.97	51.21	53.05	1.95

Determination of moisture content in consumer products by Karl Fischer titration and its interfering factors

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