200.2

METHOD 200.2 SAMPLE PREPARATION PROCEDURE FOR SPECTROCHEMICAL DETERMINATION OF TOTAL RECOVERABLE ELEMENTS

Revision 2.8 EMMC Version

T.D. Martin, E.R. Martin, and S.E. Long (Technology Applications, Inc.) - Method 200.2, Revision 1.1 (1989) T.D. Martin, S.E. Long (Technology Applications Inc.), and J.T. Creed - Method 200.2, Revision 2.3 (1991) T.D. Martin, J.T. Creed, and C.A. Brockhoff -Method 200.2, Revision 2.8 (1994)

ENVIRONMENTAL MONITORING SYSTEMS LABORATORY OFFICE OF RESEARCH AND DEVELOPMENT U. S. ENVIRONMENTAL PROTECTION AGENCY CINCINNATI, OHIO 45268

200.2-1

METHOD 200.2 SAMPLE PREPARATION PROCEDURE FOR SPECTROCHEMICAL DETERMINATION OF TOTAL RECOVERABLE ELEMENTS

1.0

SCOPE AND APPLICATION 1.1 This method provides sample preparation procedures for thedetermination of total recoverable analytes in groundwaters, surface waters, drinking waters, wastewaters, and, with the exception of silica, in solid type samples such as sediments, sludges and soils.1 Aqueous samples containing suspended or particulate material ≥1% (W/V) should be extracted as a solid type sample. This method is applicable to the following analytes: Chemical Abstract Services RegistryNumber (CASRN) (Al) (Sb) (As) (B) (Ba) (Be) (Cd) (Ca) (Cr) (Co) (Cu) (Fe) (Pb) (Li) (Mg) (Mn) (Hg) (Mo) (Ni) (P) (K) (Se) (SiO2) (Ag) (Na) (Sr) 7429-90-5 7440-36-0 7440-38-2 7440-42-8 7440-39-3 7440-41-7 7440-43-9 7440-70-2 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 7439-93-2 7439-95-4 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7723-14-0 7440-09-7 7782-49-2 7631-86-9 7440-22-4 7440-23-57440-24-6

Analyte Aluminum Antimony Arsenic Boron Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Lithium Magnesium Manganese Mercury Molybdenum Nickel Phosphorus Potassium Selenium Silicaa Silver Sodium Strontium
a

This method is not suitable for the determination of silica in solids.

200.2-2

Analyte Thallium Thorium Tin Uranium Vanadium Zinc 1.2 (Tl) (Th) (Sn) (U) (V)(Zn)

Chemical Abstract Services Registry Number (CASRN) 7440-28-0 7440-29-1 7440-31-5 7440-61-1 7440-62-2 7440-66-6

For reference where this method is approved for use in compliance monitoring programs [e.g., Clean Water Act (NPDES) or Safe Drinking Water Act (SDWA)] consult both the appropriate sections of the Code of Federal Regulation (40 CFR Part 136 Table 1B for NPDES, and Part 141 §141.23 for drinking water), and the latest Federal Register announcements. Samples prepared by this method can be analyzed by the following methods given in this supplement: Method 200.7, Determination of Metals and Trace Elements by Inductively Coupled Plasma-Atomic Emission Spectrometry; Method 200.8, Determination of Trace Elements By Inductively Coupled Plasma-Mass Spectrometry; and Method 200.9,Determination of Trace Elements by Stabilized Temperature Graphite Furnace Atomic Absorption Spectrometry. Also, this method can be used prior to analysis by direct aspiration flame atomic absorption for the above list of analytes with the exception of the following: As, B, Hg, P, Se, SiO2, Th, and U. The preparation procedures described in this method are not recommended prior to analysis by theconventional graphite furnace technique, commonly refered to as "off-the-wall", non-platform or non-delayed atomization. It is believed that the resulting chloride concentration in the prepared solutions can cause either analyte volatilization loss prior to atomization or an unremediable chemical vapor state interference for some analytes when analyzed using the conventional graphite furnacetechnique. This method is suitable for preparation of aqueous samples containing silver concentrations up to 0.1 mg/L. For the analysis of wastewater samples containing higher concentrations of silver, succeeding smaller volume, well mixed aliquots must be prepared until the analysis solution contains 50 mg/kg should be treated in a similar manner. Also, the extraction of tin from solid samples...