Page:NIOSH Manual of Analytical Methods - 7302.pdf/7

 ELEMENTS by ICP (Microwave Digestion): METHOD 7302, Issue 1, dated 21 July 2014 - Page 7 of 9

TABLE 2. EXPOSURE LIMITS, CAS #, RTECS [1,6,11]

Element (Symbol)

CAS #

RTECS

Aluminum (Al)

7429-90-5

BD0330000

Arsenic (As) Arsenic (As)

7440-38-2 7440-38-2 7440-39-3

CG0525000 CG0525000

Beryllium (Be) Cadmium (Cd) Calcium (Ca)

7440-41-7 7440-43-9 7440-70-2

DS1750000 EU9800000

Chromium (II) (Cr)

Exposure Limits in mg/m3 (C = ceiling limit) OSHA NIOSH

15 (total dust) 5 (respirable) 0.010 (inorganic) 0.010 (inorganic) 0.5 (Soluble compounds, as Ba) 0.002, C 0.005 0.005 No OELs

10 (total dust) 5 (respirable, fume) C 0.002(1) C 0.002(1) 0.5 (Soluble compounds, as Ba) C 0.0005(1) lowest feasible conc.(1) No OELs

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) Copper (Cu)

7440-48-4 7440-50-8

GF8750000 GL5325000

Iron (Fe)

1309-37-1

NO7400000

0.1 1(dust, mists) 0.1 (fume) 10 (fume) as oxide

0.05 (dust, fume) 1 (dust, mists) 0.1 (fume) 5 (dust, fume) as oxide

Lead (Pb)

7439-92-1

OF7525000

0.05

0.05

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

Nickel (Ni)

7440-02-0

QR5950000

5 (soluble) 15 (total insoluble) 1

0.015, Ca

Phosphorus (P)

7723-14-0

TH3500000

0.1

0.1

Platinum (Pt) Antimony (Sb)

7440-06-4 7440-36-0

TP2160000 CC4025000

0.002 (soluble) 0.5

1 (metal) 0.5

Selenium (Se)

7782-49-2

VS7700000

0.2

0.2

Silver (Ag) Tellurium (Te)

7440-22-4 VW3500000 0.01 (soluble, metal) 13494-80-9 WY2625000 0.1

0.01 (soluble, metal) 0.1

Tin (Sn)

7440-31-5

XP7320000

2

2

Titanium (Ti)

7440-32-6

XR1700000

15 (as TiO2)

lowest feasible(1)

Thallium (Tl)

7440-28-0

XG3425000

0.1 (soluble)

Uranium (U)

7440-61-1

YR3490000

Vanadium (V)

7440-62-2

YW240000

Yttrium (Y)

7440-65-5

ZG2980000

0.1 (soluble) 0.25 (insoluble) 0.05 (soluble) C 0.5 (respirable) as V2O5 C 0.1 (fume) asV2O5 1

Zinc (Zn)

1314-13-2

ZH4810000

Zirconium (Zr)

7440-67-7

ZH7070000

Barium (Ba)

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

0.2; STEL 0.6 (insoluble) C 0.05 1 5; STEL 10 (ZnO fume) 5; C 15 (ZnO dust) 5, STEL 10

(1) Carcinogen

NIOSH Manual of Analytical Methods (NMAM), Fifth Edition