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Last Updated:
Friday, October 03, 2008
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| ANIONS |
- State of the art automated instrumentation is conducive to accurate, rapid, and error free results.
- Flexibility to set-up for new analytes, for example organic acids or inorganic oxyanions.
- Excellent analyte sensitivity, with reporting limits at or below drinking water DLRs for clean matrices. Our RL for perchlorate in water has recently been lowered to 0.5 ug/L.
- Applicable to drinking water, fresh & marine surface & ground water, effluent, storm water run off, waste water & wine.
- Solids such as soils, food & produce, meats, plants and other matrices can be tested if a suitable extraction is available. Cal Trans methods 417 (SO4-2) & 422 (Cl-) use 300ml DI : 100g soil extraction ratio, “shake well & stand overnight”, whereas EPA 300.0, Rev 2.2, uses a 100ml DI : 10g soil ratio & mix for 5 minutes. Tests performed by our lab have shown that the Cal Trans methodology recovers substantially more than EPA 300.0 calculated on a mg/kg basis. Cal Trans methodology is followed by MAI when needed to evaluate soil for Cal Trans construction criteria, although slightly modified by MAI from standing overnight to shaking for 12 hours in order to promote reproducible data. The DI STLC extraction, due to its higher fluid to solid ratio (10ml : 1g) which helps avoid saturation and its longer extraction time, will promote even more complete recovery of anions, and will be utilized by MAI in all other situations.
- TTLC Hexachrome (EPA 3060A) alkaline digestion available. COD & pH determinations are no longer automatically included with TTLC Cr(VI), but are recommended in the case of low MS/D spike recoveries to demonstrate the reducing nature of the soil.
- Bromate detction limit = 1-2 ug/L by 300.1 in up to 100ppm chloride water samples.
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Common Anions (Br‾, Cl‾, F‾, NO3‾, NO2‾, PO4‾³, SO4‾²)
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300.0, 300.1, 9056
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Disinfection By-Products (Br‾, BrO3‾, ClO2‾, ClO3‾)
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300.0, 300.1
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Bromate, low level (BrO3‾)
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317.0
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Hexachrome (CrO4‾²) as Cr
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218.6, 3060A, 7199
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Perchlorate (ClO4‾)
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314.0, 9058
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Uncommon Anions (I‾, IO3‾, S‾², SO3‾², S2O3‾², SCN‾, + others)
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300.1m
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Organic Anions (mono-, di- & tri-carboxylic acids)
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300.1m
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| Compounds/Target Lists detail |
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