Spec Attachments (1-3).pdf
PDF 768 KB Posted
- Attached to
- Dworshak Liquid Fertilizer Federal contract opportunity
- Solicitation number
- W912EF24Q0032
About this file
This attachment provides the sample preparation, analysis methods, and standards for determining the total metal concentration and arsenic content in fertilizer using atomic absorption spectroscopy and inductively coupled plasma mass spectrometry.
The attachment outlines the testing protocol for fertilizer products to ensure arsenic levels remain below 60 parts per million. This includes details on sample digestion, instrument calibration, and quality control procedures for analyzing metal concentration using these analytical techniques. The related federal contract opportunity is a solicitation from the U.S. Army Corps of Engineers Walla Walla District for liquid fertilizer for use at the Dworshak Dam and Reservoir. Responses are due by the date listed on the solicitation document.
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| File | Type | Posted |
|---|---|---|
| Specification Photos.pdf | ||
| Solicitation.pdf |
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Text version
ATTACHMENT 1
Sample preparation, analysis methods, and standards for Total Metal Concentration
Metal Atomic Absorption
Inductively Coupled
Plasma / Mass
Spectroscopy
(ICP/MS)
ppm
Target for Fertilizer
Arsenic (As) 6020 <1.0000
Cadmium (Cd) 6020 <1.0000
Cobalt (Co) 6020 <1.0000
Lead (Pb) 6020 <1.0000
Molybdenum (Mo) 6020 <1.0000
Nickel (Ni) 6020 <1.0000
Selenium (Se) 6020 <1.0000
Zinc (Zn) 6020 <1.0000
Mercury (Hg) 7470A*, 7471A* <0.5000
Sample Preparation 3050B
*Sample preparation method 3050B cannot be used for an analysis of mercury. Instead, the sample preparation methods are described under procedures for analysis methods 7470A and 7471A.
Laboratory analysis shall comply with analytical and sampling test methods described in the latest version of U.S. Environmental Protection Agency’s publication SW-846, “Test Methods for
Evaluating Solid Waste, Physical/Chemical Methods.”
The latest version of the SW-846 can be accessed online at: https://www.epa.gov/hw-sw846
A paper copy of SW‐846 may be obtained by contacting:
National Technical Information Service (NTIS)
U.S. Department of Commerce
5285 Port Royal Road Springfield, VA 22161
(800) 553‐NTIS (553‐6847) 703‐605‐6000 (sales)
703‐605‐6900 (fax order)
Outside the continental U.S., call 703‐605‐6000 https://www.epa.gov/hw-sw846
ATTACHMENT 2
ATTACHMENT 3
| Product Test Standards (Att1 - needs review).pdf |
| 03a_DWA Liquid Fertilizer 2021 - Spec Attachments (1-3).pdf |
File details come from the government source that posted it. Updated .