TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
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SURFACTANTS<br />
ION PAIR EXTRACTION–BROMPHENOL BLUE INDICATOR<br />
CODE 4876<br />
QUANTITY CONTENTS CODE<br />
50 g pH Adjustment Powder 4509- H<br />
10 g Sodium Chloride Reagent 4877-D<br />
2 X 60 mL *DS Indicator Reagent *4508-H<br />
1 Spoon, 0.5 g, plastic 0698<br />
1 Spoon, 0.1 g, plastic 0699<br />
1 Pipet, 1.0 mL, plastic 0354<br />
*WARNING: Reagents marked with an * are considered hazardous substances. To<br />
view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD<br />
or our web site. To obtain a printed copy, contact us by e-mail, phone or fax.<br />
Aqueous waste from households and industrial laundering operations is the<br />
main source of surfactants in waters. Surfactants are found in low<br />
concentrations in natural water except in areas of an outfall or other point<br />
source.<br />
APPLICATION: Surface water, wastewater.<br />
RANGE: 0.5–8.0 as Linear Alkyl Sulfonates (LAS)<br />
METHOD: The presence of LAS in the water sample causes the transfer<br />
of bromphenol blue dye from the organic reagent layer to the<br />
aqueous layer. The amount of color in the aqueous layer is<br />
proportional to the concentration of the LAS in the sample.<br />
LAS are Methylene Blue Active Substances (MBAS). This<br />
calibration is based on sodium lauryl sulfate (dodecyl sodium<br />
sulfate). Some linear alkyl sulfonates may have a slightly<br />
different response. Prepare standards of a known<br />
concentration and follow the test procedure below to<br />
determine a conversion factor.<br />
SAMPLE Analyze samples as soon as possible. May be stored at 4Cfor<br />
HANDLING &<br />
PRESERVATION:<br />
24 hours. Warm to room temperature before testing.<br />
INTERFERENCES: Cationic surfactants and nonionic surfactants.<br />
Smart2 <strong>TEST</strong> PROCEDURES 2.04 Surfactants 1/2