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Aluminum (as Al), Welding Fumes

General Description

Synonyms: Aluminum; Aluminium; Aluminum, elemental

OSHA IMIS code: A102

CAS number: 7429-90-5

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method:

Federal OSHA and OSHA State Plan personnel submitting samples to the OSHA-Salt Lake Technical Center Laboratory for analysis must use the tared gravimetric sampling media described immediately below.

  • tared 37-mm diameter low-ash polyvinyl chloride filter
  • maximum volume: 960 L
  • minimum volume: 480 L
  • maximum flow rate: 2.0 L/min
  • current analytical method: gravimetric
  • method reference: OSHA ID-121 (partially validated)
  • note: OSHA personnel can obtain tared sampling media from the OSHA-Salt Lake Technical Center.
  • note: If the net weight of the sample yields a concentration below the standard for the substance, the OSHA-Salt Lake Technical Center will perform no further work on that sample. If the net weight corresponds to an amount greater than the standard, the sample may be analyzed for the appropriate element and the result reported as the substance.
  • current elemental analysis method: lithium borate fusion/AAS or microwave digestion/AAS
  • method reference: OSHA ID-109-SG or OSHA ID-198SG (partially validated)
  • note: Submit as a separate sample. When analysis of a compound is requested, an elemental analysis is performed and reported as the compound. The analytical method does not distinguish between dust and fume.

Exposure Limits and Health Effects (Updated September 6, 2012)

Standard Set By Exposure Limit Health Effect Codes -- Health Effects and Target Organs
OSHA PEL Not established  
NIOSH REL 5 mg/m3 TWA HE10 -- lung changes that may lead to pulmonary fibrosis; chronic respiratory diseases such as pneumoconiosis and bronchitis
ACGIH TLV® (2007) 1 mg/m3 (respirable particulate matter) TWA
A4
 
CAL/OSHA PELs 5 mg/m3 TWA  

Carcinogenic classification:

  • NTP: Not listed
  • IARC: Not listed
  • EPA: Not listed

EPA Inhalation Reference Concentration (RfC): Not established

ATSDR Inhalation Minimal Risk Levels (MRLs): Not established

NIOSH IDLH concentration: Not established

Notes on other potential health effects and hazards:

  1. Impairment of cognitive function, motor dysfunction, and peripheral neuropathy have been reported in limited studies of workers exposed to aluminum fumes (NLM 2012).
  2. Chronic occupational exposure to aluminum dust and fumes can cause signs of cholestasis (Bogdanovic and Bulat 2008).

Partial reference list:

Chemical Sampling Information

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