Hach DR2400 - Page 780

TPH (Total Petroleum Hydrocarbons)
TPH (Total Petroleum Hydrocarbons)
Page 10 of 12
TPHSoil_None_Other_IMM_Eng_Ody.fm
Diluting Water Samples
Higher concentrations in water can be tested by first diluting the sample with deionized
water (see Sensitivity). Test for other TPH compounds (i.e., gasoline) by using the
conversion factors given in Table 1 and Tabl e 2 . Dilute the sample to 50 mL with
deionized water in a graduated cylinder. (See Reagent Set, TPH 20 cuvettes
Cat. No. 27743-00.)
Choose the mL of sample from Table 3. Use the multiplier value for the chosen
quantity to multiply the value from Table 2, above.
Table 1 Various TPHs in Soil
Compound
TPH
calibrator #1
TPH
calibrator #2
TPH
calibrator #3
TPH
calibrator #4
ppm
Diesel 20 50 100 200
Gasoline 15 35 70 140
Kerosene 35 75 140 250
Benzene 20 45 85 160
Toluene 15 30 50 90
Ethylbenzene 5 15 35 75
m-Xylene 9 20 35 70
o-Xylene 10 20 40 80
p-Xylene 3 5 9 16
BTEX 5 15 25 45
Table 2 Various TPHs in Water
Compound
TPH
calibrator #1
TPH
calibrator #2
TPH
calibrator #3
TPH
calibrator #4*
* To test concentrations in water higher than those covered by the calibrators, dilute the original
sample as described below.
ppm
Diesel 2 5 10 20
Gasoline 1.5 3.5 7 14
Kerosene 3.5 7.5 14 25
Benzene 2 4.5 8.5 16
Toluene 1.5 3 5 9
Ethylbenzene 0.5 1.5 3.5 7.5
m-Xylene 0.9 2 3.5 7
o-Xylene 1248
p-Xylene 0.3 0.5 0.9 16
BTEX 0.5 1.5 2.5 4.5