Sample

Processing Method

RSD (%)

Cr

Cu

Zn

Cd

Pb

Urine

Direct Dilution

0.5

8.3

7.1

1.2

25.9

Wet Digestion

9.9

1.8

9.6

7.6

4.4

Microwave Digestion

23.0

32.9

5.1

23.6

8.7

Sweat

Direct Dilution

8.1

-

-

73.0

-

Wet Digestion

0.3

9.4

6.4

4.3

7.1

Microwave Digestion

15.2

-

38.2

8.5

-