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Comprehensive determination of polycyclic aromatic hydrocarbons in Chinese herbal medicines by solid phase extraction and gas chromatography coupled to tandem mass spectrometry 2015 Qinhuangdao Entry-Exit Inspection and Quarantine Bureau, Qinhuangdao, 066004, China.
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Print(0)
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Journal Article
Periodical, Full
Analytical and bioanalytical chemistry
Periodical, Abbrev.
Anal.Bioanal Chem.
Pub Date Free Form
Mar
Volume
407
Issue
7
Start Page
1989
Other Pages
1997
Notes
LR: 20160512; JID: 101134327; 0 (Drugs, Chinese Herbal); 0 (Polycyclic Hydrocarbons, Aromatic); 2014/10/17 [received]; 2015/01/05 [accepted]; 2014/12/19 [revised]; 2015/01/31 [aheadofprint]; ppublish
Place of Publication
Germany
ISSN/ISBN
1618-2650; 1618-2642
Accession Number
PMID: 25636228
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1007/s00216-015-8463-2 [doi]
Output Language
Unknown(0)
PMID
25636228
Abstract
A simple and highly sensitive gas chromatography-tandem mass spectrometry (GC-MS/MS) method combined with solid-phase extraction cleanup was established for the comprehensive determination of 16 Environmental Protection Agency (EPA) polycyclic aromatic hydrocarbons (PAHs) in various kinds of Chinese herbal medicines (CHMs). A solid-phase extraction (SPE) purification strategy, including three parallel procedures, was developed depending on sample type, and satisfactory purification performances were achieved for all selected CHMs. The limits of detection ranged from 0.12 to 1.08 mug kg(-1) for the analyzed PAHs. The average recoveries were in the range of 65.9 % to 100.8 %, except for naphthalene (43.8 %-75.9 %), and the relative standard deviations were =12.8 %. The proposed method was successfully applied to the analysis of PAHs in 24 CHMs including five roots, three stems, four flowers, two fruits, four seeds, three leaves, and three barks. In the samples analyzed, all 16 PAHs are present. Their sum ranges from 21.1 to 2236.3 mug kg(-1). The entire procedure was shown to be effective and conveniently fast, and may serve as an alternative screening protocol for the determination of PAHs in CHMs.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Cui,Z., Ge,N., Zhang,A., Liu,Y., Zhang,J., Cao,Y.
Original/Translated Title
URL
Date of Electronic
20150131
PMCID
Editors
Concentration of heavy metals in drinking water of different localities in district east Karachi. 2001 Jaleel, M.A., Department of Bio-chemistry, Frontier Medical College, Abbottabad.
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Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of Ayub Medical College, Abbottabad : JAMC
Periodical, Abbrev.
J Ayub Med Coll Abbottabad
Pub Date Free Form
/
Volume
13
Issue
4
Start Page
12
Other Pages
15
Notes
Place of Publication
ISSN/ISBN
1025-9589
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
BACKGROUND: Several heavy metals are present in drinking water that play important roles in the body provided their level remains within the specified range recommended by WHO. But now due to the industrialization and rapid urbanization, the problems of pollution have surfaced. This study was designed to ascertain the contents of some heavy metals and then their variations if any in drinking water in different localities of district East of Karachi, Pakistan. METHODS: Drinking water samples were collected from different sources and localities of district East of Karachi. The concentration of the heavy metals i.e. Lead, Arsenic, Copper, Iron, Mercury, Chromium, Manganese, Nickel, Cadmium and Zinc were determined by Atomic Absorption Spectrophotometry. PH was estimated by pH meter. Total dissolved solids (TDS) were calculated by formula. These concentrations of heavy metals, pH and TDS were compared with the standards set by WHO. RESULTS: Concentrations of lead and nickel were found to be significantly elevated as compared to WHO recommended levels in all the three sources of water (Piped water, Hand pump water and Tanker water supply). Chromium was found to be raised in hand pump water. Arsenic and Mercury were not detected in any source of water. Copper, iron, manganese, cadmium and zinc were found to be within the safe limits in all the three sources of water. pH was found to be within the range of WHO recommended level in all the three sources of water. TDS was found to be elevated in hand pump water and tanker water. CONCLUSION: Concentrations of lead and nickel were found to be significantly elevated as compared to WHO recommended levels in all the three sources of water in district East of Karachi.
Descriptors
arsenic, heavy metal, article, human, Pakistan, water supply
Links
Book Title
Database
MEDLINE
Publisher
Data Source
Embase
Authors
Jaleel,M. A., Noreen,R., Baseer,A.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concentrations and ozone formation potentials of BTEX during 2008-2010 in urban Beijing, China 2013 College of Forestry, Gansu Agricultural University, Lanzhou 730070, China. caohy@dq.cern.ac.cn
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Print(0)
Ref Type
Journal Article
Periodical, Full
Huan jing ke xue= Huanjing kexue / [bian ji, Zhongguo ke xue yuan huan jing ke xue wei yuan hui "Huan jing ke xue" bian ji wei yuan hui.]
Periodical, Abbrev.
Huan Jing Ke Xue.
Pub Date Free Form
Jun
Volume
34
Issue
6
Start Page
2065
Other Pages
2070
Notes
JID: 8405344; 0 (Aerosols); 0 (Air Pollutants); 0 (Benzene Derivatives); 0 (Organic Chemicals); 0 (Xylenes); 3FPU23BG52 (Toluene); 66H7ZZK23N (Ozone); J64922108F (Benzene); L5I45M5G0O (ethylbenzene); ppublish
Place of Publication
China
ISSN/ISBN
0250-3301; 0250-3301
Accession Number
PMID: 23947015
Language
chi
SubFile
English Abstract; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
Output Language
Unknown(0)
PMID
23947015
Abstract
Benzene, toluene, ethylbenzene and dimethylbenzene are typical anthropogenic emitted organics in the atmosphere, which not only endanger human health but also actively participate in photochemical reactions, generating O3 and secondary organic aerosols. In order to investigate the pollution level and its ozone formation potentials, concentrations of BTEX and O3 were parallel measured by the passive sampler and analyzed using GC-MS and ICS-90 during 2008-2010 in urban Beijing. The results show that toluene was the most abundant compound (8.7 +/- 3.1) microg x m(-3), followed by benzene, ethylbenzene and m/p-xylene, with concentrations of (7.1 +/- 3.3), (4.2 +/- 1.4) and (3.4 +/- 1.5) microg x m(-3), respectively. Concentrations of BTEX peaked in winter, followed by autumn, summer, and spring, with values of (26.8 +/- 12.1), (25.9 +/- 4.9), (24.7 +/- 2.8) and (16.8 +/- 1.4) microg x m(-3), respectively. Benzene concentrations were the highest in winter, while for toluene, the concentration was higher in summer than that in winter. Based on the maximum incremental reactivity scale, m/p-xylene was found to be the dominant contributor to ozone formation among BTEX. The ozone formation potentials of BTEX in Beijing were 65.2, 60.2, and 75.7 microg x m(-3) in 2008, 2009, and 2010, respectively, which were consistent with the measured values of 80.5, 65.0, and 101.9 microg x m(-3) during the corresponding period. Vehicular emission and solvent evaporation were the major sources of BTEX. Concentrations of benzene were affected by coal heating in winter, whereas BTEX concentration was more influenced by solvent evaporation in summer, which had an important contribution to the formation of O3 in urban Beijing.
Descriptors
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Database
Publisher
Data Source
Authors
Cao,H.Y., Pan,Y.P., Wang,H., Tan,J.H., Wang,Y.S.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concentrations of bisphenol a, bisphenol a diglycidyl ether, and their derivatives in canned foods in Japanese markets 2008 Nihon Waters KK, Katokichi Shin-Osaka Building, Osaka, Japan.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of Agricultural and Food Chemistry
Periodical, Abbrev.
J.Agric.Food Chem.
Pub Date Free Form
26-Mar
Volume
56
Issue
6
Start Page
2041
Other Pages
2047
Notes
LR: 20131121; JID: 0374755; 0 (Benzhydryl Compounds); 0 (Epoxy Compounds); 0 (Phenols); F3XRM1NX4H (2,2-bis(4-glycidyloxyphenyl)propane); MLT3645I99 (bisphenol A); 2008/02/20 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
0021-8561; 0021-8561
Accession Number
PMID: 18284199
Language
eng
SubFile
Journal Article; IM
DOI
10.1021/jf073106n [doi]
Output Language
Unknown(0)
PMID
18284199
Abstract
Bisphenol A (BPA), bisphenol A diglycidyl ether (BADGE), and their derivatives in 38 canned foods sold in Japan were measured using high-performance liquid chromatography-mass spectrometry (LC-MS) and LC-tandem mass spectrometry (LC-MS/MS). BPA, BADGE, BADGE.2H 2O, BADGE.HCl.H2O, BADGE.HCl, and BADGE.2HCl were 0-235.4, 0-3.4, 0-247.2, 0.2-196.4, 0-3.0, and 0-25.7 ng/g, respectively, which did not exceed acceptable daily intake for BPA and specific migration limit for BADGEs. BADGE was degraded by 58, 100, 46, and 58% in water (pH 7), 0.01 N HCl (pH 2), 0.01 N NaCl (pH 6.8), and 0.01 N NaCl with acetic acid (pH 2.5), respectively, when it was allowed to stand at 120 degrees C for 30 min. The prominent derivatives formed were BADGE.2H 2O and BADGE.HCl.H2O, which was formed not only in BADGE with added HCl but also in that with NaCl. Acetic acid accelerated the formation of both BADGE.2H2O and BADGE.HCl.H2O in NaCl. No BPA was detected in any simulation samples started from BADGE. The results suggest that BPA and BADGE are independently leached into canned foods and that BADGE is easily changed to more stable compounds such as BADGE.2H2O and BADGE.HCl.H2O by sterilization.
Descriptors
Benzhydryl Compounds, Chromatography, High Pressure Liquid, Epoxy Compounds/analysis, Food Handling/methods, Food Packaging, Food Preservation, Hot Temperature, Japan, Mass Spectrometry, Phenols/analysis, Sterilization
Links
Book Title
Database
Publisher
Data Source
Authors
Yonekubo,J., Hayakawa,K., Sajiki,J.
Original/Translated Title
URL
Date of Electronic
20080220
PMCID
Editors
Concentrations of the carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone in sidestream cigarette smoke increase after release into indoor air: results from unpublished tobacco industry research 2007 Center for Tobacco Control Research and Education and the Lung Biology Center, Department of Medicine, University of California San Francisco, Box 0854, San Francisco, CA 94143-1390, USA. sschick@medsfgh.ucsf.edu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
Periodical, Abbrev.
Cancer Epidemiol.Biomarkers Prev.
Pub Date Free Form
Aug
Volume
16
Issue
8
Start Page
1547
Other Pages
1553
Notes
LR: 20151119; GR: CA-87472/CA/NCI NIH HHS/United States; JID: 9200608; 0 (Air Pollutants); 0 (Carcinogens); 0 (Nitrosamines); 0 (Tobacco Smoke Pollution); 31C4KY9ESH (Nitric Oxide); 64091-91-4 (4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone); 6M3C89Z
Place of Publication
United States
ISSN/ISBN
1055-9965; 1055-9965
Accession Number
PMID: 17684127
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; IM
DOI
16/8/1547 [pii]
Output Language
Unknown(0)
PMID
17684127
Abstract
Research has shown that the toxicity of sidestream cigarette smoke, the primary constituent of secondhand smoke, increases over time. To find potential mechanisms that would explain the increase in sidestream smoke toxicity over time, we analyzed unpublished research reports from Philip Morris Co. using the internal tobacco industry documents now available at the University of California San Francisco Legacy Tobacco Documents Library and other Web sites. Unpublished research from Philip Morris Tobacco Company shows that 4-(methylnitrosamino)-I-(3-pyridyl)-1-butanone (NNK), a highly carcinogenic tobacco-specific nitrosamine, can form in sidestream cigarette smoke after it has been released into ambient air. In experiments done between 1983 and 1997, Philip Morris scientists measured the concentration of NNK in sidestream smoke in a sealed stainless steel test chamber at initial particle concentrations of 24 mg/m(3) over the course of 6 to 18 h. They repeatedly showed that airborne NNK concentrations in sidestream cigarette smoke can increase by 50% to 200% per hour during the first 6 h after cigarettes are extinguished. Two experiments done in a real office showed that NNK concentrations increase for the first 2 h after cigarettes are extinguished. If NNK formation also occurs in the lower smoke concentrations observed in real smoking environments, these results suggest that nitrosation of nicotine and/or nicotine breakdown products in aging secondhand smoke is a significant contributor to nitrosamine exposure in humans.
Descriptors
Air Pollutants/analysis, Air Pollution, Indoor/analysis, Carcinogens/analysis/chemistry, Humans, Humidity, Nicotine/chemistry, Nitric Oxide/analysis/chemistry, Nitrogen Dioxide/analysis/chemistry, Nitrosamines/analysis/chemistry, Nitrosation, Temperature, Time Factors, Tobacco Industry, Tobacco Smoke Pollution/analysis
Links
Book Title
Database
Publisher
Data Source
Authors
Schick,S. F., Glantz,S.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concerning the article by G.A. Stepanenko, V.M. Kucheriava "Current status of water fluoridation in household water pipes of the Ukrainian S.S.R. and ways of its further improvement" 1990 Beliaev, N.N.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Gigiena i sanitariia
Periodical, Abbrev.
Gig.Sanit.
Pub Date Free Form
/
Volume
Issue
4
Start Page
90
Other Pages
Notes
Place of Publication
ISSN/ISBN
0016-9900
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
article, fluoridation, standard, Ukraine, water supply
Links
Book Title
Po povodu stat'i G. A. Stepanenko, V. M. Kucheriavoi "Sovremennoe sostoianie ftorirovaniia vody na khoziaistvenno-pit'evykh vodoprovodakh USSR i puti ego dal'neishego sovershenstovaniia".
Database
MEDLINE
Publisher
Data Source
Embase
Authors
Beliaev,N. N.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concerning the request for a license to exploit water piped from the spring of natural mineral water called "Des Etuves" located at Digne (Basses-Alpes) 1967 Binet, L.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Bulletin de l'Académie nationale de médecine
Periodical, Abbrev.
Bull.Acad.Natl.Med.
Pub Date Free Form
/
Volume
151
Issue
3
Start Page
58
Other Pages
64
Notes
Place of Publication
ISSN/ISBN
0001-4079
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
mineral water, article, France, standard
Links
Book Title
Concernant la demande d'autorisation d'exploitation après transport à distance, de l'eau de la source d'eau minérale naturelle dite "des Etuves" située à Digne (Basses-Alpes)
Database
MEDLINE
Publisher
Data Source
Embase
Authors
Binet,L.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concurrent alcohol use and waterpipe tobacco smoking: Smoking topography, toxicant exposure, and abuse liability 2019
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & Tobacco Research
Periodical, Abbrev.
Nicotine Tobacco Res.
Pub Date Free Form
Volume
Issue
Start Page
Other Pages
Notes
Place of Publication
ISSN/ISBN
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
Links
Book Title
Database
Publisher
Data Source
google
Authors
Leavens, Eleanor LS, Morgan, Taylor L, Brett, Emma I, Lee, Kelsey, Son, Jessica, Molina, Neil, Eissenberg, Thomas, Shihadeh, Alan, Leffingwell, Thad R, Wagener, Theodore L
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concurrent alcohol use and waterpipe tobacco smoking: Smoking topography, toxicant exposure, and abuse liability 2019
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & Tobacco Research
Periodical, Abbrev.
Nicotine Tobacco Res.
Pub Date Free Form
Volume
Issue
Start Page
Other Pages
Notes
Place of Publication
ISSN/ISBN
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
Links
Book Title
Database
Publisher
Data Source
google
Authors
Leavens, Eleanor LS, Morgan, Taylor L, Brett, Emma I, Lee, Kelsey, Son, Jessica, Molina, Neil, Eissenberg, Thomas, Shihadeh, Alan, Leffingwell, Thad R, Wagener, Theodore L
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Concurrent alcohol use and waterpipe tobacco smoking: smoking topography, toxicant exposure, and abuse liability 2019
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & Tobacco Research
Periodical, Abbrev.
Nicotine Tobacco Res.
Pub Date Free Form
Volume
Issue
Start Page
Other Pages
Notes
Place of Publication
ISSN/ISBN
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
Descriptors
Links
Book Title
Database
Publisher
Data Source
google
Authors
Leavens, Eleanor LS, Morgan, Taylor L, Brett, Emma I, Patzkowsky, Kelsey, Son, Jessica, Molina, Neil, Eissenberg, Thomas, Shihadeh, Alan, Leffingwell, Thad R, Wagener, Theodore L
Original/Translated Title
URL
Date of Electronic
PMCID
Editors