Page:NIOSH Manual of Analytical Methods - 7304.pdf/7

 ELEMENTS by ICP (Microwave Digestion): METHOD 7304, Issue 1, dated 25 June 2014 - Page 7 of 11

Table 2. EXPOSURE LIMITS, CAS #, RTECS [1,14,15] Exposure Limits, mg/m3 (C = ceiling limit) OSHA NIOSH

Element (Symbol)

CAS #

RTECS #

Aluminum (Al)

7429-90-5

BD0330000

15 (total dust) 5 (respirable)

10 (total dust) 5 (respirable, fume)

Arsenic (As)

7440-38-2

CG0525000

0.010 (inorganic)

C 0.002(1)

Barium (Ba)

7440-39-3

CQ8370000

0.5 (soluble)

0.5 (soluble)

Beryllium (Be)

7440-41-7

DS1750000

0.002, C 0.005

C 0.0005(1)

Cadmium (Cd)

7440-43-9

EU9800000

0.005

lowest feasible conc.(1)

Calcium (Ca)

7440-70-2

No OEL

No OEL

Cobalt (Co)

7440-48-4

GF8750000

0.1

0.05 (dust, fume)

Chromium (II) (Cr)

22541-79-3

GB6260000

0.5

0.5

Chromium (III) (Cr)

16065-83-1

GB6261000

0.5

0.5

Chromium (VI) (Cr)

18540-29-9

GB6262000

0.005

0.0002

Cobalt (Co)

7440-48-4

GF8750000

0.1

0.05 (dust, fume)

Copper (Cu)

7440-50-8

GL5325000

1 (dust, mists) 0.1 (fume)

1 (dust, mists) 0.1 (fume)

Iron (Fe)

1309-37-1

NO7400000

10 (fume) as oxide

5 (dust, fume) as oxide

Magnesium (Mg)

1309-48-4

OM3850000

15 (dust) as oxide

--

Manganese (Mn)

7439-96-5

OO9275000

C5

1; STEL 3

Molybdenum (Mo)

7439-98-7

QA4680000

5 (soluble) 15 (total insoluble)

--

Nickel (Ni)

7440-02-0

QR5950000

1

0.015(1)

Phosphorus (P)

7723-14-0

TH3500000

0.1

0.1

Lead (Pb)

7439-92-1

OF7525000

0.05

0.05

Platinum (Pt)

7440-06-4

TP2160000

0.002 (soluble)

1 (metal)

Selenium (Se)

7782-49-2

VS7700000

0.2

0.2

Silver (Ag)

7440-22-4

VW3500000

0.01 (soluble, metal)

0.01 (soluble, metal)

Tellurium (Te)

13494-80-9

WY2625000

0.1

0.1

Titanium (Ti)

7440-32-6

XR1700000

15 (as TiO2)

lowest feasible(1)

Thallium (Tl)

7440-28-0

XG3425000

0.1 (soluble)

0.1(soluble)

Vanadium (V)

7440-62-2

YW240000

C 0.5 (respirable) as V2O5 C 0.1 (fume) as V2O5

C 0.05

Yttrium (Y)

7440-65-5

ZG2980000

1

1

Zinc (Zn)

1314-13-2

ZH4810000

5 (ZnO fume) 15 (ZnO dust) 5 (ZnO respirable)

5; STEL 10 (ZnO fume) 5; C 15 (ZnO dust)

Zirconium (Zr)

7440-67-7

ZH7070000

5

5, STEL 10

(1) Carcinogen

NIOSH Manual of Analytical Methods (NMAM), Fifth Edition