West Bengal || Bangladesh
Middle Ganga Plain, Bihar ||
FIELD TESTING KITS FOR ARSENIC: HOW EFFECTIVE ARE THE MILLION-DOLLAR PROJECTS?
(3) The UNICEF/DPHE/BRAC report further
states, "While a positive
correlation was found between Field-Kit and Arsenator results, the field
kit results were found to differ substantially from arsenator results.
Figure 2 shows the large amount scatter between the two analyses".
(4) From the report of UNICEF/DPHE/BRAC it appears they spent a lot of time on the assessment of NIPSOM field kit for Quantitative Effectiveness, Semi-Quantitative effectiveness and very low arsenic level <10 ppb when the NIPSOM kit reports its arsenic detection range to be 20 - 700 µg/l with colour scale 20, 50, 100, 200, 300, 400, 500 and 700 µg/l
(5) UNICEF/DPHE/BRAC to explain higher
result of Field-Kit writes in page of its report, "The Arsenator could actually underestimated
the arsenic level".
From the appendix data (p-9) it
appears that out of the 28 results where concentration measured by
field kit was between
20 and 500 µg/l,
in 10 samples (36 %) Arsenator results for arsenic were higher than field
[Action Research Report UNICEF/DPHE/BRAC Arsenic Testing of newly installed tubewells; Quality Control on Field Kit Analysis, March, 1999, page-4]
COMMENTS ON THE REPORT
Joint Plan of Action to AddressArsenic Contamination of Drinking WaterGovernment of West Bengal and UNICEFNodal DepartmentPublic Health Engineering Department1999.
The Government of West Bengal, jointly with UNICEF, has taken up a project for 68 blocks in 8 arsenic-affected districts of West Bengal to know whether the arsenic concentration in tubewells is above or below 50 µg/l (yes/no). The project will be implemented soon and the expenses to get the data for 1,50,000 tubewells is about 1.2million US $. The budget shown below: