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