수출입 식물검역업체 근로자의 공기 중 Methyl Bromide 노출에 관한 연구 (Workers' Exposure to Airborne Methyl Bromide in the Exporting/Importing Plants and Products Quarantine Company)

서지정보

· 발행기관 : 한국산업보건학회
· 수록지 정보 : 한국산업보건학회지 / 18권 / 1호 / 32 ~ 40페이지
· 저자명 : 이현석, 신용철

초록

Methyl bromide has been used as a representative fumigant
for quarantine, and several poisoning cases have occurred
recently by this chemical in Korea. The purpose of this study is
to evaluate workers' exposures to airborne methyl bromide in
the importing and exporting plant products quarantine
companies.
Air samples were collected 400/200 mg Anasorb 747TM
and were analyzed by gas chromatograph /flame ionization
detector according to the Occupational Safety and Health
Agency (OSHA) Method PV2040.
Geometric mean (GM) and arithmetic mean (AM) of total
27 workers' exposure concentrations to airborne methyl bromide
were 1.12 ppm and 0.24 ppm, respectively. Two exposures(12.1
ppm and 12 ppm as 8hr-TWA) of total 27 workers' exposures
exceeded the Korean standard (5 ppm) of Ministry Labor, while
4 exposures (15%) exceeded the Threshold Limit Value (TLV)
(1 ppm) of American Conference of Governmental Industrial
Hygienists (ACGIH). Seven samples (11%) of total 63 shortterm
air samples exceeded the OSHA Permissible Exposure
Limit (PEL) 20 ppm (Ceiling). The opening (management) task
in wood fumigation by tent showed the highest short-term
exposure concentrations (AM: 18.6 ppm, GM: 0.58 ppm,
maximum: 340.7 ppm). The maximum level in treatment task
of the same process was 2.01 ppm. Methyl bromide
concentrations in opening operation was significantly higher
than that in treatment operation (p<0.05).
In conclusion, the GM of workers' 8hr-TWA exposures to
airborne methyl chloride in the importing/exporting plant
quarantine industry was estimated below the ACGIH TLV (1
ppm). However, opening task in the fumigation of wood being
covered with tent or fumigation of pant products in container
showed the levels exceeding ACGIH TLV (1 ppm), and
opening task in the fumigation of wood being covered with tent
showed the level exceeding the Korean standard of Ministry of
Labor (5 ppm).

영어초록

Methyl bromide has been used as a representative fumigant
for quarantine, and several poisoning cases have occurred
recently by this chemical in Korea. The purpose of this study is
to evaluate workers' exposures to airborne methyl bromide in
the importing and exporting plant products quarantine
companies.
Air samples were collected 400/200 mg Anasorb 747TM
and were analyzed by gas chromatograph /flame ionization
detector according to the Occupational Safety and Health
Agency (OSHA) Method PV2040.
Geometric mean (GM) and arithmetic mean (AM) of total
27 workers' exposure concentrations to airborne methyl bromide
were 1.12 ppm and 0.24 ppm, respectively. Two exposures(12.1
ppm and 12 ppm as 8hr-TWA) of total 27 workers' exposures
exceeded the Korean standard (5 ppm) of Ministry Labor, while
4 exposures (15%) exceeded the Threshold Limit Value (TLV)
(1 ppm) of American Conference of Governmental Industrial
Hygienists (ACGIH). Seven samples (11%) of total 63 shortterm
air samples exceeded the OSHA Permissible Exposure
Limit (PEL) 20 ppm (Ceiling). The opening (management) task
in wood fumigation by tent showed the highest short-term
exposure concentrations (AM: 18.6 ppm, GM: 0.58 ppm,
maximum: 340.7 ppm). The maximum level in treatment task
of the same process was 2.01 ppm. Methyl bromide
concentrations in opening operation was significantly higher
than that in treatment operation (p<0.05).
In conclusion, the GM of workers' 8hr-TWA exposures to
airborne methyl chloride in the importing/exporting plant
quarantine industry was estimated below the ACGIH TLV (1
ppm). However, opening task in the fumigation of wood being
covered with tent or fumigation of pant products in container
showed the levels exceeding ACGIH TLV (1 ppm), and
opening task in the fumigation of wood being covered with tent
showed the level exceeding the Korean standard of Ministry of
Labor (5 ppm).

참고자료

· 없음