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PAEW Laboratories Best Practices
Sharifa Khamis Al Mazroui
The 2nd Oman Energy & Water Exhibition & Conference
23 – 25 May 2016
Agenda • Water Quality Lab Mission • Central and Regional Laboratories • Roles and Responsibilities of Central Water Quality
Lab • Sample Receiving and Work flow • Sampling Sources And Measured Parameters • Analytical Groups – Microbiology & Chemistry • Quality Assurance and Quality Control • Documentation • Quality Surveillance • Data Evaluation and Documentation
Water Quality Laboratory Mission
Examine elements that causes pollution in drinking water
as recommended by Omani standard.
Identifying unknown contaminants
To Set Up a Nuclear Radiation Measurement Section.
To ensure to follow the best practices adopted globally
To maintain and reinforce the consumer confidence in
consuming drinking water
Central and Regional Laboratories
Roles and Responsibilities Of Central Laboratory
To provide equipment maintenance support
To provide additional testing requirement which is not available
in the area
To provide instrumentation standardization methods
To provide Hand on training for new staff
Regular meeting with regional lab technicians
Regular foreign training at manufacturing facilities
Scheduled performance appraisal of technicians
Scheduled consumables supply
Surveillance Plan
Laboratory tests
Microbiology
Coliform E.coli
Chemistry
Physical In organic Organic Heavy metals
On site tests
Portable Test Kits e.g.
pH Conductivity
Free chlorine
Quality Control, Data Analysis & Documentation
SAMPLING RECEIVING AND WORKFLOW
Group Classification Parameters A Physical Ost, PCH
B Chemical INS, INC, INA
C Heavy metals HME,MET,DME
D Toxic PES, PNL, PAH
E organic TOC, THM, VOC, S-VOC
F Microbiology BAC
Sampling Sources And Measured Parameters
Analytical Groups Testing Parameters-Microbiology
Analysis of Coliform &
E. Coli
Source Quality level Unit
Total Coliform Fecal Coliform (E.coli)
(Desalination Plants, Network, Reservoir, Filling
station)
0 0 cfu / 100ml
Tankers (From Chlorinated water
source)
< 3 0
cfu / 100ml
Untreated Ground water supplies
< 10
0
cfu / 100ml
Analytical Groups Testing Parameters-Chemistry
Analysis of Cations &
Anions
Analysis of pH, Conductivity,
Chloride, Hardness and
Alkalinity
Analysis of heavy metals
Trace elements
Ion Chromatograph DIONEX DOU 3000
Autotirator/ Manual Titra METTLOR TOLEDO
ICP-MS THERMO SCIENTIFIC
GC-MS/Agilant
Analysis of heavy metals
Trace elements
ICP-OES PERKIN ELMER
Analytical Groups Testing Parameters-Chemistry
Analysis of Fluoride
Potassium Ammonia
Sodium
Sievers 5310 UV-Spct ISE-Multi Channel THERMO
Water Purification
Analysis of VOC, THM & SVOC,
Pesticides .. etc
GC-MS Varian
Analysis of TOC
TOC SIVERS
UV-VIS spectrophotometer DR 6000 HACH Analysis of Chlorine, Sulphate, Nitrate, Nitrite, etc
Quality Assurance/Quality Control
Quality Assurance
* Calibration (Equipment, materials). * Training (Staff). * Instrument Maintenance. * Audit and Review * Sampling strategy. * Analysis strategy.
Quality Control
* Reference materials (QC- Chart). * Duplicates Samples. * Blank samples * Spiked samples. * Anion/cation balances.
1409
1411
1413
1415
1417
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
E.C (us/cm)
date
E.C Chart
mean
UCL
UWL
LWL
LCL
E.C
Quality Surveillance
Water Quality asses the quality of all laboratories by testing the same source of sample different parameters and comparing the results in Ongoing monitoring and verification of the status of conditions, methods, procedures, and results, and analysis of associated records to ensure that the established requirements are being complied
Quality Surveillance
Quality Surveillance
Z-score
Results Entry Results Approval
Data Evaluation & Documentation
Data Evaluation & Documentation
Thank you
BACK UP
Sample receiving and login
Water Quality Surveillance
Chemistry tests
Reporting / Documents
Sample Testing
Test results
Reports Approving
H.O.D Approve
Quality Control Manager
Approve
Sample collection
Physical tests
Micro tests
1
2
3
4
Testing Group Classifications
Group Classification Parameters
A Physical Colour, turbidity, odour, taste, TDS, calciumhardness, total hardness, chlorine, conductivity, pH
B Chemical Sulphate, magnesium, sodium, potassium, chlorides, nitrate, nitrite, ammonium, totalorganic carbon, dissolved or emulsiified hydrocarbons, mineral oil, aluminium, iron, manganese, copper, zinic, phosphorus, fluoride
C Heavy metals Arsenic,cadmium,cyanides,chromium,mercury,nickel,lead,antimony,selenium,barium,boron
D toxicants Endrine, lindane, methoxychlor,2,4 dichlorophenoxyacetic acid,2,4,5 trichlorophenoxypropionic acid, phenos, heptachlor, aldrin, DDT, chlodane, dieldrin, heptachlor epoxide
E Organic Trichloroethene tetrachloromethane,tetrachloroethene,chloroform,polycyclic aromatic hydrocarbons,trihalomethanse,1,2dichloroethane,benzene,benzo(a)pyrene,bromoform,dichloromethane,bromodichloromethane,chlorobenzene
F Microbial Total coliforms,e.coli or thermotolerant coliforms,enterococci.HPC