Hanna-instruments HI 83205-2008 Uživatelský manuál stáhnout pdf (Strana 25)

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Molybdenum

MOLYBDENUM

SPECIFICATIONS

Range 0.0 to 40.0 mg/L

Resolution 0.1 mg/L

Accuracy ±0.3 mg/L ±5% of reading

Typical EMC ±0.1 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 420 nm

Method Adaptation of the mercaptoacetic acid method. The reaction between molybdenum and

the reagents causes a yellow tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93730A-0 Reagent A 1 packet

HI 93730B-0 Reagent B 1 packet

HI 93730C-0 Reagent C 1 packet

REAGENT SETS

HI 93730-01 Reagents for 100 tests

HI 93730-03 Reagents for 300 tests

For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Molybdenum

method using the procedure

described in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample (up to

the mark) and replace the cap.

• Place the cuvette into the holder and close the lid.

• Press ZERO key. The display will show “-0.0-” when

the meter is zeroed and ready for measurement.

Iron LR

INTERFERENCES

Interference may be caused by:

Cadmium above 4.0 mg/L

Chromium

above 0.25 mg/L

Chromium

above 1.2 mg/L

Cobalt above 0.05 mg/L

Copper above 0.6 mg/L

Cyanide above 2.8 mg/L

Manganese above 50.0 mg/L

Mercury above 0.4 mg/L

Molybdenum above 4.0 mg/L

Nickel above 1.0 mg/L

Nitrite ion above 0.8 mg/L

Sample pH should be between 3 and 4 to avoid developed color to fade or turbidity formation.

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