The Relationship between the Occupational Exposure of Trichloroethylene and Kidney Cancer

Table 4 Exposure levels of trichloroethylene by Korean manufacturing industry jobs according to the regular work environment measurement (2002~2010)

Job	No. of samples	Arithmetic mean (ppm)	Median (ppm)	Geometric mean (ppm)	Maximum (ppm)
Cleaning	8,374	8.953	2.33495	0.16013	598
Degreasing	421	7.780	2.01080	0.04185	152
Assembly	1,146	2.850	0.08975	0.00101	237
Adhesion	700	1.044	0.16850	0.00172	29
Coating	671	3.250	0.48790	0.01499	154
Painting	3,713	1.326	0.00000	0.00015	148
Processing	1,046	3.955	0.41855	0.01159	108
Inspection	890	2.704	0.59650	0.01061	94
Printing	1,519	1.948	0.17800	0.00518	65
Soldering	802	2.053	0.42860	0.00881	50
Plating	399	8.508	3.17970	0.25311	63
Molding	507	4.545	0.71700	0.01194	60
Laboratory	317	0.692	0.00000	0.00006	48
Impregnation	199	7.697	0.18200	0.00839	185
Mixing	511	1.807	0.09700	0.00111	54
Heat treatment	201	4.982	1.00000	0.01987	64
Plugging	34	0.565	0.08136	0.00063	8
Infusion	267	5.846	0.40630	0.01467	270
Reaction	138	0.461	0.00000	0.00005	6
Packing	273	2.128	0.27600	0.00597	45
Cast	124	2.601	0.04165	0.00060	43
Others	11,400	9.318	0.27935	0.00540	1,471
Total	33,652	6.497	0.40790	0.00840	–

ISSN: 2052-4374