OSHA Method ID-121: Metal & Metalloid Particulates In Workplace Atmospheres (Atomic Absorption)
1. Introduction
This method can determine the amount of specific metal and metalloid particulates in the workplace atmosphere. The airborne particulates are collected on filters using calibrated sampling pumps. These samples are then analyzed using flame atomic absorption or emission spectrometry. This method can also determine specific metals and metalloids contained in wipe and bulk samples. The identification and quantification of the particulate is directly determined as the element. The elements are:
| Aluminum (Al) | Gold (Au) | Potassium (K) |
| Antimony (Sb) | Hafnium (Hf) | Selenium (Se) |
| Barium (Ba) | Indium (In) | Silver (Ag) |
| Bismuth (Bi) | Iron (Fe) | Sodium (Na) |
| Cadmium (Cd) | Lead (Pb) | Tellurium (Te) |
| Calcium (Ca) | Lithium (Li) | Thallium (Tl) |
| Cesium (Cs) | Magnesium (Mg) | Tin (Sn) |
| Chromium (Cr) | Manganese (Mn) | Titanium (Ti) |
| Cobalt (Co) | Molybdenum (Mo) | Yttrium (Y) |
| Copper (Cu) | Nickel (Ni) | Zinc (Zn) |
| | Platinum (Pt) | Zirconium (Zr) |
