Metrology in Chemistry (MiC)

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Quality assurance in Indo-Flux through
traceability to Indian NMI - NPL New Delhi
Prabhat K. Gupta
Scientist F Head Analytical Chemistry
SectionNational Physical Laboratory (NPL) New
Delhi-110012, India(E-mail prabhat_at_mail.nplindia
.ernet.in)
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Envisat-SCIAMACHY measurements are averaged over
the time period of Aug. through Nov. 2003 on a 1º
x 1º horizontal grid.
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Wheat Crop Residue Burning After Combine
Harvesting
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Chemical Composition of RSPM in Delhi
(Ca, Mg, Sl,
Al, Fe, Na, Ti,
Pb, Zn)
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Wet-Only (Rain) Collector at NPL, New Delhi
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INDOFLUX Network studies and QA/QC issues (Role
of Indian NMI - NPL New Delhi)
SI Units Length (m) Mass (kg) Time (s) Electric
Current (A) Temperature (K) Luminous Intensity
(cd) Mol
Uncertainty 3 x 10-11 4.6 x 10-9 1 x 10-13 1 x
10-6 2.5 x 10-4 (1.6-1.3) x 10-2 -
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Realization of amount of substance through MiC
involves the determination of accurate amounts of
reactants, reagents and products in a chemical
reaction by use of definitive methods such as
Gravimetry, Titrimetry, Coulometry and pH by
Harned Cell primary method etc.
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Impact The realization of base unit mol through
MiC will have impacts on Food quality and
security, Energy, Environment Health, Societal,
national and international Trade Indian
economy, through quality system of MiC in the
country.
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MiC Broad Areas are organic/ inorganic/ gas/
electrochemical/ surface/ and bio analysis etc..
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Possible Areas for MiC CRMs Gas Stable gas,
Reactive gas and Multi-component gas
mixures Organic Clinical, Medicine, Environment,
Forensic Doping, Petroleum, Agriculture Food
and others Inorganic Elemental, Geochemical,
Soil, Metal Alloys, Environmental, Bldg.
Materials, Health, Agriculture and others Bio GMO
Analysis, Pathogens, Genetic Testing, Gene
Expression, Protein and others
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CRM Programme
Geo-chemical Standards
Elemental Solution Standards
Food Standards
35 Institutions
Natural Water Standards
Petroleum Standards
Gas Mixtures Standards
Spectroscopic Standards
Pesticide Standards
XRD Standards
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• Some Lead Laboratories for the preparation of
  CRMs
• for Various Disciplines
• Water Multi and mono elemental solutions, Nature
  water,
• Gas Mixtures, X-ray Diffraction and SEM/TEM
• Resolution Standards
• NPL New Delhi
• Spectroscopic Standards
• NML, Jamshedpur
• Trace Elements in Lubricating Fuel Oil
• IIP, Dehradun
• Pesticides
• IICT, Hyderabad
• Milk Powder
• CFTRI, Mysore
• Gold Geo-chemical
• NGRI, Hyderabad

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Preparation Dissemination of Certified
Reference Materials CRMs 25 Nos.
Key-Comparisons NATA-4, CCQM-1, IMEP-2,
NCCRM-1, EANET-1, APMP-1
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Gas Metrology
Future Primary Gas Std Preparation-Gravimetric
NPL-I Traceable
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FutureResearch.. Atmosphere-Terrestrial Coupling
by Tower based-Flux Network Approach
Focus CO2, H2O and Heat Exchange GHG
Fluxes Pollutant gases C, N, S, P-deposition (Wet
Dry) Tower footprint Scaling (RS/GIS) up to
regional level in Various Biomes/ Eco-regions or
Agro-Ecological Regions Network Sites
Multi-disciplinary Teams Regional Biospheric
processes data in Global Regional Climate Models
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Indo-Flux DST, ISRO, CSIR, ICAR, DOD,
MoEF Tower 10m-300m based Observations Coupling
of Atmosphere-Ocean-Terrestrial Earth
Systems Long-Term, Multi-Disciplinary Forecasting,
Food Security, Sustainable Development,
Environment and Policy NPL can Participate give
lead for SI-Units national traceability i.e. Most
measurements traceable to NPL-India
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Thank You