Environmental Engineering Reference
In-Depth Information
Dissolved
Oxygen (DO)
Apparent
Color
Hardness
Conductivity
Total Alkalinity
Biochemical
Oxygen Demand
(BOD)
Water
Quality
Factors
Total Solids
Nitrate
Temperature
Total
Orthophosphate
pH
Odor
Fecal Bacteria
Turbidity
Figure 10.1
Water quality factors.
Preparation of Sampling Containers
Sampling devices should be corrosion resistant, easily cleaned, and capable
of collecting desired samples safely and in accordance with test require-
ments. Whenever possible, assign a sampling device to each sampling
point. Sampling equipment must be cleaned on a regular schedule to avoid
contamination.
Note: Some tests require special equipment to ensure that the sample is
representative. Dissolved oxygen sampling and fecal bacteria sampling
require special equipment and procedures to prevent the collection of
nonrepresentative samples.
Reused sample containers and glassware must be cleaned and rinsed
before the first sampling run and after each run by following Method A
or Method B described below. The most suitable method depends on the
parameter being measured.
Method A: General Preparation of Sampling Containers
Use the following method when preparing all sample containers and glass-
ware for monitoring c o n du c t i v it y, total solids, t u r b i d it y, pH, and total alka-
linity. Wear latex gloves.
 
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