Phenols
Phenols
Page 4 of 6
Phenols_None_Other_4AM_Eng_Ody.fm
Accuracy Check
Standard Solution Method
For greater accuracy, analyze standard solutions when new lots of reagent are
first used.
1. Weigh out 1.00 g of Phenol, ACS. Transfer to a 1000-mL volumetric flask.
Dilute to the mark with freshly boiled and cooled deionized water. This is a
1000-mg/L stock solution.
2. Pipet 10.0 mL of the 1000-mg/L stock solution to a 1000-mL volumetric flask.
Dilute to the mark with deionized water. This is a 10-mg/L working solution.
3. Prepare a 0.200-mg/L standard solution by pipetting 10.0 mL of the working
solution into a 500-mL volumetric flask. Dilute to the mark with
deionized water.
4. Perform the phenol procedure described above using the prepared standard.
5. To adjust the calibration curve using the reading obtained with the standard
solution, touch
Options on the current program menu. Touch
Standard Adjust.
6. Touch
On. Touch Adjust to accept the displayed concentration. If an alternate
concentration is used, touch the number in the box to enter the actual
concentration, then touch
OK. Touch Adjust.
See Section 3.2.4 Adjusting the Standard Curve on page 40 for more information.
Method Performance
Precision
Standard: 0.100 mg/L phenol
See Section 3.4.3 Precision on page 44 for more information, or if the standard
concentration did not fall within the specified range.
Sensitivity
See Section 3.4.5 Sensitivity on page 44 for more information.
Program 95% Confidence Limits of Distribution
470 0.091–0.109 mg/L phenol
Portion of Curve ∆Abs ∆Concentration
Entire range 0.010 0.002 mg/L phenol
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