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Conference Paper: Inorganic and organic mercury levels in the United States National Health and Nutrition Examination Survey (NHANES) 2005-2010

TitleInorganic and organic mercury levels in the United States National Health and Nutrition Examination Survey (NHANES) 2005-2010
Authors
Issue Date2015
PublisherHong Kong Academy of Medicine Press. The Journal's web site is located at http://www.hkmj.org/
Citation
The 20th Medical Research Conference (MRC 2015), Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, 17 January 2015. In Hong Kong Medical Journal, 2015, v. 21 suppl. 1, p. 17, abstract no. 15 How to Cite?
AbstractOBJECTIVES: Mercury is an environmental hazard. Therefore, we studied recent trends in the blood level of organic and inorganic mercury in the United States. METHODS: We analysed newly available data on blood inorganic mercury levels in the United States National Health and Nutrition Examination Survey (NHANES) 2005-2010. Organic mercury level was calculated by subtracting inorganic mercury level from the total mercury level. As complex sampling was used in NHANES, appropriate weights were used to adjust for oversampling of minorities and sampling from the same location. RESULTS: There were 8364, 8161, and 8727 participants in NHANES 2005-6, 2007-8, and 2009-10, respectively. Inorganic mercury levels (geometric mean [95% confidence interval]) were 0.31 [0.30-0.32], 0.30 [0.30-0.31], 0.28 [0.27-0.28] µg/L and organic mercury levels were 0.24 [0.19-0.30], 0.19 [0.14-0.25], 0.27 [0.22-0.33] µg/L in 2005-6, in 2007-8, and in 2009-10, respectively. Inorganic mercury levels showed a significant decreasing trend (P < 0.05). The adjusted proportion (mean ± standard error) of participants with a total mercury level of ≥5.8 µg/L was 3.0 ± 0.2%, 3.5 ± 0.6%, and 4.0 ± 0.4% (P < 0.05) in NHANES 2005-6, 2007-8, and 2009-10, respectively. CONCLUSIONS: Inorganic mercury level has been decreasing during the study period. Organic mercury level was lower in 2007-2008 but increased in 2009-10. The significant increase in organic mercury level in the US general population in 2009-10 is of concern, suggesting that continual monitoring of mercury levels is needed.
Persistent Identifierhttp://hdl.handle.net/10722/232416
ISSN
2015 Impact Factor: 0.887
2015 SCImago Journal Rankings: 0.279

 

DC FieldValueLanguage
dc.contributor.authorCheung, BMY-
dc.contributor.authorCheung, AJ-
dc.date.accessioned2016-09-20T05:29:49Z-
dc.date.available2016-09-20T05:29:49Z-
dc.date.issued2015-
dc.identifier.citationThe 20th Medical Research Conference (MRC 2015), Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, 17 January 2015. In Hong Kong Medical Journal, 2015, v. 21 suppl. 1, p. 17, abstract no. 15-
dc.identifier.issn1024-2708-
dc.identifier.urihttp://hdl.handle.net/10722/232416-
dc.description.abstractOBJECTIVES: Mercury is an environmental hazard. Therefore, we studied recent trends in the blood level of organic and inorganic mercury in the United States. METHODS: We analysed newly available data on blood inorganic mercury levels in the United States National Health and Nutrition Examination Survey (NHANES) 2005-2010. Organic mercury level was calculated by subtracting inorganic mercury level from the total mercury level. As complex sampling was used in NHANES, appropriate weights were used to adjust for oversampling of minorities and sampling from the same location. RESULTS: There were 8364, 8161, and 8727 participants in NHANES 2005-6, 2007-8, and 2009-10, respectively. Inorganic mercury levels (geometric mean [95% confidence interval]) were 0.31 [0.30-0.32], 0.30 [0.30-0.31], 0.28 [0.27-0.28] µg/L and organic mercury levels were 0.24 [0.19-0.30], 0.19 [0.14-0.25], 0.27 [0.22-0.33] µg/L in 2005-6, in 2007-8, and in 2009-10, respectively. Inorganic mercury levels showed a significant decreasing trend (P < 0.05). The adjusted proportion (mean ± standard error) of participants with a total mercury level of ≥5.8 µg/L was 3.0 ± 0.2%, 3.5 ± 0.6%, and 4.0 ± 0.4% (P < 0.05) in NHANES 2005-6, 2007-8, and 2009-10, respectively. CONCLUSIONS: Inorganic mercury level has been decreasing during the study period. Organic mercury level was lower in 2007-2008 but increased in 2009-10. The significant increase in organic mercury level in the US general population in 2009-10 is of concern, suggesting that continual monitoring of mercury levels is needed.-
dc.languageeng-
dc.publisherHong Kong Academy of Medicine Press. The Journal's web site is located at http://www.hkmj.org/-
dc.relation.ispartofHong Kong Medical Journal-
dc.rightsHong Kong Medical Journal. Copyright © Hong Kong Academy of Medicine Press.-
dc.titleInorganic and organic mercury levels in the United States National Health and Nutrition Examination Survey (NHANES) 2005-2010-
dc.typeConference_Paper-
dc.identifier.emailCheung, BMY: mycheung@hkucc.hku.hk-
dc.identifier.authorityCheung, BMY=rp01321-
dc.identifier.hkuros265058-
dc.identifier.volume21-
dc.identifier.issuesuppl. 1-
dc.identifier.spage17, abstract no. 15-
dc.identifier.epage17, abstract no. 15-
dc.publisher.placeHong Kong-

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