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Research into Problems with NIOSH Method 2520 for Methyl Bromide.

PB95179842

Publication Date	1994
Personal Author	Gagnon, Y. T.; Ringenburg, V. L.; Fajen, J. M.
Page Count	28
Abstract	As part of an industry wide study in the fumigation industry, industrial hygiene evaluations were conducted at two structural fumigation facilities in Florida during July of 1990; difficulty was noted with National Institute for Occupational Safety and Health (NIOSH) Method 2520 for methyl-bromide (74953). Sampling results indicated that methyl bromide breakthrough had occurred. Some of the backup tubes contained greater amounts of methyl-bromide than the front sampling tubes. Several problems were discovered when reviewing the method. These included reduced adsorption capacity at high humidity, difficulty in preparing standard solutions, sample instability, decreasing recovery as the loading decreased, and insufficiently low quantitation limit. Several modifications were offered for methyl-bromide sampling.
Keywords	Methyl bromide Test methods Occupational safety and health Air pollution sampling Industrial hygiene Analytical chemistry Chemical analysis Air quality Halogenated pesticides Bromine organic compounds NIOSH Method 2520
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68E - Pesticides Pollution & Control 68G - Environmental Health & Safety 57P - Pest Control 57U - Public Health & Industrial Medicine
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199511

Research into Problems with NIOSH Method 2520 for Methyl Bromide.

Research into Problems with NIOSH Method 2520 for Methyl Bromide.
PB95179842

Publication Date	1994
Personal Author	Gagnon, Y. T.; Ringenburg, V. L.; Fajen, J. M.
Page Count	28
Abstract	As part of an industry wide study in the fumigation industry, industrial hygiene evaluations were conducted at two structural fumigation facilities in Florida during July of 1990; difficulty was noted with National Institute for Occupational Safety and Health (NIOSH) Method 2520 for methyl-bromide (74953). Sampling results indicated that methyl bromide breakthrough had occurred. Some of the backup tubes contained greater amounts of methyl-bromide than the front sampling tubes. Several problems were discovered when reviewing the method. These included reduced adsorption capacity at high humidity, difficulty in preparing standard solutions, sample instability, decreasing recovery as the loading decreased, and insufficiently low quantitation limit. Several modifications were offered for methyl-bromide sampling.
Keywords	Methyl bromide Test methods Occupational safety and health Air pollution sampling Industrial hygiene Analytical chemistry Chemical analysis Air quality Halogenated pesticides Bromine organic compounds NIOSH Method 2520
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68E - Pesticides Pollution & Control 68G - Environmental Health & Safety 57P - Pest Control 57U - Public Health & Industrial Medicine
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199511