Inhalable fraction

Inhalable fraction Particles with aerodynamic diameters up to 10 xm, which can enter the lungs. 

In the investigation of methods for measurement of personal exposure, a method for measuring hydroquinone in air was evaluated, both in the laboratory and in the workplace. The method involved sampling the inhalable fraction onto a filter contained in a multi-holed sampler with a back-up of Tenax TA, followed by desorption into acetonitrile and analysis by HPLC. Desorption efficiency was shown to be effectively 100%. 13 refs. 

ACGIH TLV Proposed (inhalable fraction) 0.1 mg/m Not Classifiable as a Human Carcinogen)... 

ACGIH TLV TWA 0.01 mg/m Confirmed Human Carcinogen BEI 35 n (As)/L inorganic arsenic and methylated metabolites in urine Proposed (inhalable fraction) 0.1 mg/m Not Classifiable as a Human Carcinogen)... 

ACGIH TLV Insoluble Compounds inhalable fraction, 10 mg(Mo)/m3, 3 mg(Mo)/m, respirable fraction. 

ACGIH TLV inhalable fraction 1 mg/m (sensitizer) Confirmed Animal Carcinogen with Unknown Revelance to Humans SAFETY PROFILE Moderately toxic by ingestion, skin contact, and possibly other routes. Questionable carcinogen with experimental carcinogenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of Cr and NO.. 

OSHA PEL TWA 0.5 mg(Sb)/m3 ACGIH TLV TWA 0.5 mg(Sb)/m3 Proposed (inhalable fraction) 0.1 mg/m Not Classifiable as a Human Carcinogen) NiOSH REL (Antimony) TWA 0.5 mg/m SAFETY PROFILE Poison by ingestion. Human systemic effects by ingestion nausea, vomiting, and other gastrointestinal effects. When heated to decomposition it emits very toxic fumes of T, NOx, and Sb. See also ANTIMONY COMPOUNDS, EMETINE and IODIDES. 

ACGIH TLV TWA 0.005 ppm STEL 0.02 ppm Not Classifiable as a Human Carcinogen (Proposed TWA 0.005 ppm STEL 0.02 ppm (sensitizer) Not Classifiable as a Human Carcinogen) (Proposed TWA inhalable fraction and vapor 0.001 ppm STEL 0.003 skin sensitizer Not Classifiable as a Human Carcinogen)... 

Cooper et al. (1994) have reported re-suspension studies on soils contaminated with plutonium during nuclear weapons tests by use of a mechanical dust-raising apparatus. Airborne dust was analysed in terms of mass and Am activities for particle sizes less than 7 pm. The AMAD was determined as 4.8-6 pm for re-suspended soil. Also, surface soil was characterised in the laboratory by means of sieving and microparticle classification, yielding mass and "Am activity distribution with respect to size. Data indicate the granularity of plutonium contamination at both major and minor trial sites. Depth profile analyses for undisturbed areas demonstrate that most (74% on average) of the americium and plutonium activity is found in the top 10 mm of soil. Plutonium and americium activities were found to be enhanced in the inhalable fraction over their values in the total soil, and the enhancement factors were similar in re-suspended dust and surface soil. Observed enhancement factors ranged from 3.7 to 32.5. 

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