| Optimization of the Spectrophotometric Method using Eosin Y for the Quantification of Guanidine Oligomers in Consumer Products |
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Sang-Hyun Choi1, Jeong-Eun Bae2, Han Bin Oh2, Jung-Hwan Kwon1 |
1Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea
2Department of Chemistry, Sogang University, Seoul 04107, Korea |
| 소비자제품 중 구아니딘계 올리고머의 정량을 위한 Eosin Y를 이용한 흡광분석법의 최적화 |
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최상현1, 배정은2, 오한빈2, 권정환1 |
1고려대학교 환경생태공학부
2서강대학교 화학과 |
Correspondence:
Jung-Hwan Kwon, Tel: 82-2-3290-3041, Fax: 82-2-953-0737,
Email: junghwankwon@korea.ac.kr
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| Abstract |
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A spectroscopic method using a specific interaction between guanidine groups and 2,4,5,7- tetrabromo-6- oxido- 3-oxo-3H-xanthen-9-yl)benzoate (Eosin Y) for quantifying guanidine oligomers from consumer products was optimized. Specifically, reaction time, detection wavelength, pH condition, and solid-phase extraction were optimized with the method detection limits of 0.133, 0.155, and 0.195 mg/L for polyhexamethylene guanidine (PHMG), polyhexamethylene biguanidine (PHMB), poly(2-(2-ethoxy)ethoxyethyl guanidium hydrochloride (PGH), respectively. Using the method, the content of guanidine oligomers were determined from various consumer products (wet tissues, contact lens cleaners, and make-up removers). This method can be used for detecting the existence of guanidine oligomers from consumer products as a screening tool. |
| Key Words:
Guanidines, Analytical method, Spectrophotometry, Consumer products |
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