Sample Collection & Preservation | 四色AV University of Louisiana at Monroe

Auxiliary Enterprises

Environmental Analysis Laboratory

Example - Sample Collection & Preservation

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PRESERVATION & SAMPLE SIZE REQUIREMENTS

NON-POTABLE WATER & WASTEWATER ANALYSIS

Refer to 40 CFR 136 Table II

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Sample Preservation Chart
TEST	Test Method	VOLUME	CONTAINER	PRESERVATION	HOLD TIME
Alkalinity (Bicarbonate and Total)	SM 2320 B-2021	500 mL	P, FP, G	Cool, 鈮� 6掳C	14 days
Biochemical Oxygen Demand	SM 5210 B-2016	500 mL	P, FP, G	Cool, 鈮� 6掳C	48 hours
Carbonate	SM 2320 B-2021	500 mL	P, FP, G	Cool, 鈮� 6掳C	14 days
Chemical Oxygen Demand	EPA 410.4 and HACH 8000	125 mL	P, FP, G	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
Chloride	SM 4500-Cl C-2021	500 mL	P, FP, G	None Required	28 days
Coliforms, Total or Fecal	SM 9222 B&D-2015	100 mL	PA, G	Cool, 鈮� 10掳C, 0.008% Na2S2O3	8 hours
Color	SM 2120 B-2021	250 mL	P, FP, G	Cool, 鈮� 6掳C	48 hours
Conductance	SM 2510 B-2021	125 mL	P, FP, G	Cool, 鈮� 6掳C	28 days
Cyanide	SM 4500-CN C&E-2021	1000 mL	P, FP, G	Cool, 鈮� 6掳C, NaOH to pH >10, reducing agent if oxidizer present	14 days
Dissolved Oxygen	SM 4500-O G-2021	500 mL	G	None Required	Within 15 minutes
Hardness	SM 2340 B-2021	500 mL	P, FP, G	HNO3 to pH < 2	6 months
Nitrogen, Ammonia	SM 4500-NH3 D-2021	125 mL	P, FP, G	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
Nitrogen, Nitrate	EPA 352.1 and HACH 10206, 6^th ED	250 mL	P, FP, G	Cool, 鈮� 6掳C	48 hours
Nitrogen, Nitrite	SM 4500-NO2 B-2021	250 mL	P, FP, G	Cool, 鈮� 6掳C	48 hours
Nitrogen, Nitrate/Nitrite	HACH 10206, 6^th ED	250 mL	P, FP, G	Cool, 鈮� 6C, H2SO4 to pH < 2	28 days
Nitrogen, Organic (TKN)	HACH 10242, Rev 1.2	250 mL	P, FP, G	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
Nitrogen, Total	TKN + NO3/NO2 (calc)	250 mL	P, FP, G	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
Oil & Grease	EPA 1664A (HEM)	1000 mL	G only	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
pH	SM 4500-H+ B-2021	125 mL	P, FP, G	None Required	Within 15 minutes
Sulfate (as S)	SM 4500 SO4 E-2021	500 mL	P, FP, G	Cool, 鈮� 6掳C	28 days
Orthophosphate as P	EPA 365.3	500 mL	P, FP, G	Filter within 15 minutes, Cool, 鈮� 6掳C	48 hours
Phosphorus, Total	EPA 365.3	500 mL	P, FP, G	Cool, 鈮� 6掳C, H2SO4 to pH < 2	28 days
Solids, Dissolved	SM 2540 C-2020	500 mL	P, FP, G	Cool, 鈮� 6掳C	7 days
Solids, Suspended	SM 2540 D-2020	500 mL	P, FP, G	Cool, 鈮� 6掳C	7 days
Solids, Total	SM 2540 B-2020	500 mL	P, FP, G	Cool, 鈮� 6掳C	7 days
Solids, Volatile	EPA 160.4	250 mL	P, FP, G	Cool, 鈮� 6掳C	7 days
Temperature	SM 2550 B 22^nd Ed	125 mL	P, FP, G	None Required	Within 15 minutes
Turbidity	SM 2130 B-2020	250 mL	P, FP, G	Cool, 鈮� 6掳C	48 hours
Metals, except Boron, Chromium VI, and Mercury	EPA 200.7	500 mL	P, FP, G	HNO3 to pH <2, or at least 24 hours prior to analysis	6 months
Mercury	EPA 245.1 and 245.6	500 mL	P, FP, G	HNO3 to pH <2	28 days
Boron	EPA 200.7	500 mL	P, FP, Quartz	HNO3 to pH <2	6 months