1
|
Liu JKY, Feng E, Fu Y, Li W, Ma X, Sheng H, Kong J, Liu Y, Hicks M, Xiang B, Liu Z, Pennington J, Kenttämaa HI. A Diagnostic Nitrosamine Detection Approach for Pharmaceuticals by Using Tandem Mass Spectrometry Based on Diagnostic Gas-Phase Ion-Molecule Reactions. Anal Chem 2022; 94:13795-13803. [PMID: 36154017 DOI: 10.1021/acs.analchem.2c02282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-Nitrosamines are strictly regulated in pharmaceutical products due to their carcinogenic nature. Therefore, the ability to rapidly and reliably identify the N-nitroso functionality is urgently needed. Unfortunately, not all ionized N-nitroso compounds produce diagnostic fragment ions and hence tandem mass spectrometry based on collision-activated dissociation (CAD) cannot be used to consistently identify the N-nitroso functionality. Therefore, a more reliable method was developed based on diagnostic functional-group selective ion-molecule reactions in a linear quadrupole ion trap mass spectrometer. 2-Methoxypropene (MOP) was identified as a reagent that reacts with protonated N-nitrosamines in a diagnostic manner by forming an adduct followed by the elimination of 2-propenol (CH3C(OH)═CH2]). From 18 protonated N-nitrosamine model compounds studied, 15 formed the diagnostic product ion. The lack of the diagnostic reaction for three of the N-nitrosamine model compounds was rationalized based on the presence of a pyridine ring that gets preferentially protonated instead of the N-nitroso functionality. These N-nitrosamines can be identified by subjecting a stable adduct formed upon ion-molecule reactions with MOP to CAD. Further, the ability to use ion-molecule reactions followed by CAD to differentiate protonated O-nitroso compounds with a pyridine ring from analogous N-nitrosamines was demonstrated This methodology is considered to be robust for the identification of the N-nitroso functionality in unknown analytes. Lastly, HPLC/MS2 experiments were performed to determine the detection limit for five FDA regulated N-nitrosamines.
Collapse
Affiliation(s)
- Judy Kuan-Yu Liu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Erlu Feng
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Yue Fu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Wanru Li
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Xin Ma
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Huaming Sheng
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - John Kong
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yong Liu
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Michael Hicks
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Bangping Xiang
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Zhijian Liu
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Justin Pennington
- Department of Analytical Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Hilkka I Kenttämaa
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| |
Collapse
|
3
|
Lim DS, Roh TH, Kim MK, Kwon YC, Choi SM, Kwack SJ, Kim KB, Yoon S, Kim HS, Lee BM. Risk assessment of N-nitrosodiethylamine (NDEA) and N-nitrosodiethanolamine (NDELA) in cosmetics. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2018; 81:465-480. [PMID: 29694274 DOI: 10.1080/15287394.2018.1460782] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
N-nitrosamines and their precursors found in cosmetics may be carcinogenic in humans. Thus the aim of this study was to carry out risk assessment for N-nitrosamines (N-nitrosodiethanolamine [NDELA], N-nitrosodiethylamine [NDEA]) and amines (triethanolamine [TEA], diethanolamine [DEA]) levels in cosmetics determined using validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) procedures. NDELA and NDEA concentrations were present at levels of "not detected" (N.D.) to 596.5 μg/kg and N.D. to 40.9 μg/kg, respectively. TEA and DEA concentrations ranged from N.D. to 860 μg/kg and N.D. to 26.22 μg/kg, respectively. The nitrite concentration (3-2250 mg/l), number of nitrosating agents to a maximum 5, and pH (3.93-10.09) were also assessed. The impact of N-nitrosamine formation on the levels of TEA, DEA, nitrite, and other nitrosating agents was also examined. N-nitrosamine concentrations correlated with the number of nitrosating agents and nitrite concentrations. Data demonstrated that higher nitrite concentrations and a greater number of nitrosating agents increased NDELA and NDEA yields. Further, the presence of TEA and DEA exerted a significant influence on N-nitrosamine formation. Risk assessments, including the margin of exposure (MOE) and lifetime cancer risk (LCR) for N-nitrosamines and margin of safety (MOS) for amines, were calculated using product type, use pattern, and concentrations. Exposure to maximum amounts of NDELA and NDEA resulted in MOE > 10,000 (based upon the benchmark dose lower confidence limit 10%) and LCR <1 × 10-5, respectively. In addition, TEA and DEA concentrations in cosmetic samples resulted in MOS values >100. Therefore, no apparent safety concerns were associated with cosmetic products containing NDELA, NDEA, TEA, and DEA in this study. However, since amines and nitrosating agents produce carcinogenic nitrosamines, their use in cosmetics needs to be minimized to levels as low as technically feasible.
Collapse
Affiliation(s)
- Duck Soo Lim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Tae Hyun Roh
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Min Kook Kim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Yong Chan Kwon
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Seul Min Choi
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Seung Jun Kwack
- b Department of Biochemistry and Health Science, College of Natural Sciences , Changwon National University , Changwon , Gyeongnam , South Korea
| | - Kyu Bong Kim
- c College of Pharmacy , Dankook University , Cheonan , Chungnam , Republic of Korea
| | - Sungpil Yoon
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Hyung Sik Kim
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| | - Byung-Mu Lee
- a Division of Toxicology, College of Pharmacy , Sungkyunkwan University , Suwon , Gyeonggi-do , South Korea
| |
Collapse
|