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Table 3 Results of exposure reenactment of dichloromethane

From: IgA nephropathy in a laboratory worker that progressed to end-stage renal disease: a case report

Measurement point

Duration (min)

Short-term exposure concentration (ppm)

Time-weighted average concentration (ppm)

A. Ultrasound-assisted extractor 1 (Respiratory location)

23

68

254

26

200

21

359

26

301

18

374

B. Ultrasound-assisted extractor 2 (Respiratory location)

23

91

181

26

157

21

88

26

228

18

359

C. Above the ultrasound-assisted extractors

113

-

179

  1. OEL (Occupational exposure limit): Time-weighted average 50 ppm (the Korean Industrial Safety and Health Act), short-term exposure limit 125 ppm (OSHA)