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. Author manuscript; available in PMC: 2022 Sep 10.
Published in final edited form as: Sci Total Environ. 2022 Jun 1;838(Pt 1):155713. doi: 10.1016/j.scitotenv.2022.155713

Table 2.

Ambient total Cr concentration at different work sites measured by area air samplings (mg/m3) using two methods.

Area of sampling Sample number GBZ/T 160.7a
 NIOSH 7703b
Mean Range Mean Range
Products loading area after electroplating 6 <0.010 <0.010 0.0019 0.0016–0.0023
Electroplating tanks 6 0.027 0.026–0.028 0.0276 0.0241–0.0286
Administrative offices 12 <0.010 <0.010 0.0012 0.0007–0.0022
a

GBZ/T 160.7: Methods for determination of chromium and its compounds in the air of workplace according to “National occupational health standards of the People’s Republic of China”.

b

NIOSH 7703: Methods for determination of chromium and its compounds in the air of workplace according to “The National Institute for Occupational Safety and Health (NIOSH)”.