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DOI: https://doi.org/10.4491/eer.2018.144
Simultaneous quantitative analysis of four isothiazolinones and 3-iodo-2-propynyl butyl carbamate present in hygienic consumer products
Jin Ju Heo1, Un-Jung Kim Kim1,2, and Jeong-Eun Oh1
1Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Republic of Korea
2Center for Environment, Health and welfare Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Kore
Corresponding Author: Jeong-Eun Oh ,Tel: 82-51-510-3513, Fax: 82-51-514-9574, Email: jeoh@pusan.ac.kr
Received: April 12, 2018;  Accepted: June 23, 2018.
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ABSTRACT
In this study, extraction, clean-up and instrumental analytical conditions were optimized for identifying and quantifying methyl-, chloromethyl- benzi-, octyl- isothiazolinone (MIT, CMIT, BIT, OIT) and 3-iodo-2-propynyl butyl carbamate (IPBC), widely used biocidal active ingredients in human hygiene consumer products. Accuracy of the developed ultrasonic assisted extraction method followed by HPLC/MS analysis for four isothiazolinones and IPBC ranged between 60.4% and 113% in various types of consumer product samples. Method detection limits ranged 0.011-0.034 mg/kg for wet wipes, 0.57-1.5 mg/kg for liquid detergent and 0.58-1.6 mg/kg for powder detergent. Wet wipes, powder and liquid detergents collected from local market in Korea were analyzed to demonstrate the applicability of the developed method. Even after the regulation of those compounds in wet wipes, CMIT, MIT and IPBC were still frequently detected from complementary wet wipes without brand labels which were distributed to customers at local retail shops and restaurants. The maximum observed concentrations of MIT and CMIT found in those complementary wet wipes were 70.2 mg/kg and 11.3 mg/kg, respectively.
Keywords: Biocidal active ingredient | Consumer products | Detergent | UAE-HPLC/MS | Wet wipes
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