Personal exposures to inorganic and organic dust in manual harvest of California citrus and table grapes

Journal of Occupational and Environmental Hygiene
Kiyoung LeeMarc B Schenker

Abstract

The aim of this study was to determine characteristics of personal exposure to inorganic and organic dust during manual harvest operations of California citrus and table grapes. Personal exposures to inhalable dust and respirable dust were measured five times over a 4-month period of harvesting season. We analyzed components of the dust samples for mineralogy, respirable quartz, endotoxin, and total and culturable microorganisms. Workers manually harvesting were exposed to a complex mixture of inorganic and organic dust. Exposures for citrus harvest had geometric means of 39.7 mg/m(3) for inhalable dust and 1.14 mg/m(3) for respirable dust. These exposures were significantly higher than those for table grape operations and exceeded the threshold limit value for inhalable dust and respirable quartz. Exposures for table grape operations were lower than the threshold limit value, except inhalable dust exposure during leaf pulling. Considered independently, exposures to inhalable dust and respirable quartz in citrus harvest may be high enough to cause respiratory health effects. The degree of vigorous contact with foliage appeared to be a significant determining factor of exposures in manual harvesting.

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Citations

Mar 17, 2007·Journal of Toxicology and Environmental Health. Part a·Val VallyathanVince Castranova
Feb 18, 2006·Journal of Occupational and Environmental Hygiene·Shu-An LeeTiina Reponen
Nov 27, 2008·The Annals of Occupational Hygiene·A M MadsenT T Olsen
Feb 23, 2010·The Annals of Occupational Hygiene·Andrew J SwanepoelKerry Gardiner
Jul 9, 2013·International Journal of Hygiene and Environmental Health·Rebecca E MoranMarc B Schenker
May 21, 2013·International Journal of Occupational and Environmental Health·José C Franque MiremboDavid Rees
Sep 12, 2018·Journal of Occupational and Environmental Hygiene·Suzanne E GilbeyKrassi B Rumchev
Nov 12, 2005·Journal of Occupational and Environmental Medicine·Marc B SchenkerStephen A McCurdy
Oct 24, 2017·Journal of Occupational and Environmental Hygiene·Andrew SwanepoelDavid Rees
Sep 14, 2010·Journal of Environmental Quality·Rebecca A DomingoKiyoung Lee
Jun 6, 2020·The Science of the Total Environment·Yangyang WangRunhua Chen
Jul 13, 2018·The Science of the Total Environment·Chongyang LiSanjai J Parikh

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Methods Mentioned

BETA
X-ray
fluorescence microscopy

Software Mentioned

STATA

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