Katahdin Analytical Services - Preservation Guide

Preservation Guide

**Municipal & Industrial Wastewater Analysis (NPDES)**
ORGANICS
Parameter	Typical Method(s)	Sample Container/ Preservative	Preferred Volume (mL)	EPA Holding Time
Purgeable Halocarbons	EPA 601	VOA/4°C	2 x 40	14 Days
Purgeable Aromatics	EPA 602	VOA/4°C, HCl to pH < 2	2 x 40	14 Days (7 Days unpreserved)
Acrolein and Acrylonitrile	EPA 603	VOA/4°C, pH adjusted	2 x 40	14 Days
Phenols	EPA 604	GA/4°C	2 x 1000	7/40 Days
Benzidines	EPA 605	GA/4°C	2 x 1000	7/7 Days
Phthalates Esters	EPA 606	GA/4°C	2 x 1000	7/40 Days
Nitrosamines	EPA 607	GA/4°C	2 x 1000	7/40 Days
Organochlorine Pesticides and PCB's	EPA 608	GA/4°C	2 x 1000	7/40 Days
Nitroaromatics and Isophorones	EPA 609	GA/4°C	2 x 1000	7/40 Days
Polynuclear Aromatic Hydrocarbons	EPA 610	GA/4°C	2 x 1000	7/40 Days
Haloethers	EPA 611	GA/4°C	2 x 1000	7/40 Days
Chlorinated Hydrocarbons	EPA 612	GA/4°C	2 x 1000	7/40 Days
2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin	EPA 613	GA/4°C	2 x 1000	7/40 Days
Organophosphate Pesticides	EPA 614	GA/4°C	2 x 1000	7/40 Days
Chlorinated Herbicides	EPA 615	GA/4°C	2 x 1000	7/40 Days
Purgeables	EPA 624	VOA/4°C, HCl to pH < 2	2 x 40	14 Days (7 Days unpreserved)
Base/ Neutrals and Acids	EPA 625	GA/4°C	2 x 1000	7/40 Days

Sample Containers:
- G = Glass
- A = Amber
- P = Plastic, polyethylene bottle with a polypropylene cap
- GA = Glass amber bottle with a Teflon lined cap
- VOA = Volatile organic 40 ml vial with a Teflon lined cap
Preservatives:
- HCl = Hydrochloride Acid
- H₂SO₄ = Sulfuric Acid
- NHO₃ = Nitric Acid
- NaOH = Sodium Hydroxide
- Zn + Acetate = Zinc + Acetate
Regulations:
- SDWA = Safe Drinking Water Act
- NPDES = National Pollutant Discharge Elimination System
- RCRA = Resource Conservation Recovery Act
Note:
- The methods shown are those commonly employed in performing environmental analyses. It is not intended to be inclusive of all possible EPA analytical methods or to indicate that Katahdin Analytical Services routinely provides the methods or parameters shown. The information provide is current as of March 1996.