Hach Arsenic DR 6000 Instruction Manual
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Hach Arsenic DR 6000 Instruction Manual

Silver diethyldithiocarbamate method
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Arsenic
Silver Diethyldithiocarbamate Method
0 to 0.200 mg/L As
Scope and application: For water, wastewater and seawater. Distillation is required. USEPA accepted
reporting for drinking and wastewater analysis.
1
Adapted from Standard Methods for the Examination of Water and Wastewater.
2
Procedure is equivalent to Standard Method 3500-As for drinking water analysis.
Test preparation
Instrument-specific information
Instrument
DR 6000
DR 3800
DR 2800
DR 2700
DR 1900
DR 5000
DR 3900
Before starting
A manual calibration is necessary for this procedure, refer to
the user program for each new lot of arsenic absorber solution.
Prepare the arsenic absorber solution before starting the test procedure. Refer to
Set up the distillation apparatus in a fume hood to prevent exposure to hazardous gas.
In bright light conditions (e.g., direct sunlight), close the cell compartment, if applicable, with the protective cover during
measurements.
Do not use the Pour-Thru Cell or sipper module (for applicable instruments) with this test.
Review the Safety Data Sheets (MSDS/SDS) for the chemicals that are used. Use the recommended personal protective
equipment.
Dispose of reacted solutions according to local, state and federal regulations. Refer to the Safety Data Sheets for disposal
information for unused reagents. Refer to the environmental, health and safety staff for your facility and/or local regulatory
agencies for further disposal information.
Items to collect
Description
Apparatus (refer to
Required apparatus
Arsenic Standard Solution, 1000–mg/L As
Hydrochloric Acid, ACS
Table 1
shows all of the instruments that can make a user calibration program for this
test. The table also shows sample cell and orientation requirements for reagent addition
tests, such as powder pillow or bulk reagent tests.
To use the table, select an instrument, then read across to find the applicable information
for this test.
Table 1 Instrument-specific information
Sample cell orientation
The fill line is to the right.
The fill line is toward the user.
on page 7)
1
Calibration
on page 5. Make a new calibration and update
DOC316.53.01005
Sample cell
2612602
Reagent preparation
on page 5.
Quantity
Method 8013
2
for
–
varies
25 mL
1

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Summary of Contents for Hach Arsenic DR 6000

  • Page 1 Arsenic DOC316.53.01005 Silver Diethyldithiocarbamate Method Method 8013 0 to 0.200 mg/L As Scope and application: For water, wastewater and seawater. Distillation is required. USEPA accepted reporting for drinking and wastewater analysis. Adapted from Standard Methods for the Examination of Water and Wastewater. Procedure is equivalent to Standard Method 3500-As for drinking water analysis.

  • Page 2: Sample Collection And Storage

    Items to collect (continued) Description Quantity Lead Acetate Solution, 10% 1 mL Potassium Iodide Solution, 20% 3 mL Pyridine, ACS 50 mL Sample cells (For information about sample cells, adapters or light shields, refer to Instrument- specific information on page 1.) Silver Diethyldithiocarbamate Stannous Chloride Solution 1 mL...
  • Page 3 5. Use a graduated cylinder 6. Attach the cylinder/gas 7. Use a graduated cylinder 8. Set the heater power to to pour 25-mL of prepared bubbler assembly to the to pour 250 mL of sample on. Set the stir control to 5. arsenic absorber solution distillation apparatus.
  • Page 4 17. Start the instrument 18. When the timer expires, 19. Move the gas bubbler 20. Prepare the blank: Fill timer. A 15-minute reaction set the heater power to off. up and down in the arsenic a dry 10-mL sample cell with time starts.

  • Page 5: Reagent Preparation

    Reagent preparation C A U T I O N Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets (MSDS/SDS) for safety protocols. Prepare the arsenic absorber solution as follows: 1.

  • Page 6: Summary Of Method

    Option Description Program name Enter a name for the user program, (e.g., the name of the parameter). Program type Select single wavelength (for applicable spectrophotometers). 4. Enter the settings for the user program: Option Description Units mg/L Wavelength 520 nm Concentration resolution 0.001 Chemical form...

  • Page 7: Required Apparatus

    Consumables and replacement items (continued) Description Quantity/test Unit Item no. Silver Diethyldithiocarbamate 25 g 1447624 Stannous Chloride Solution 1 mL 100 mL 1456942 Water, deionized varies 27256 Zinc, 20-mesh, ACS 454 g 79501 Required apparatus Description Quantity/test Unit Item no. Balance, analytical, Zeta series, 80-g capacity each 2936701...
  • Page 8 Outside the U.S.A. – Contact the HACH office or distributor serving you. Telephone: (970) 669-3050 On the Worldwide Web – www.hach.com ; E-mail – techhelp@hach.com FAX: (970) 669-2932 © Hach Company/Hach Lange GmbH, 2007, 2010, 2012, 2014. All rights reserved. 03/2014, Edition 8...

This manual is also suitable for:

Arsenic dr 3800Arsenic dr 2800Arsenic dr 2700Arsenic dr 1900Arsenic dr 5000Arsenic dr 3900

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