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AMMONIA BY AQ2 DISCRETE ANALYSER (PERFORMANCE CHARACTERISTICS (PRECISION…
AMMONIA BY AQ2 DISCRETE ANALYSER
PERFORMANCE CHARACTERISTICS
RANGE OF APPLICATION
CALIBRATION CURVE
LIMIT OF DETECTION
SUBSTANCE DETERMINED
AMMONIA AND AMMONIUM ION
TYPE OF SAMPLE
UNTREATED AND TREATED DOMESTIC WASTEWATERS AND TRADE EFFLUENT DISCHARGES
PRECISION TEST DATA
SENSITIVITY
BIAS
STANDARD DEVIATION
INTERFERENCES
BASIS OF METHOD
TIME REQUIRED FOR ANALYSIS
METHOD OF SUITABILITY
REAGENTS
DEIONISED WATER
ANALYTICAL SOLUTONS
CALIBRATION STANDARDS
MIXED CALIBRATION STOCK
ALLOWS SIMULTANEOUS ANALYSES OF AMMONIA, TOTAL OXIDISED NITROGEN, CHLORIDE AND PHOSPHATE
SUITABLE FOR 2 MONTHS
WORKING STANDARDS FOR MANUAL CALIBRATION
STD 1 0,STD 2 0.5,STD 3 1,STD 4 2.5, STD 5 5, STD 6 7.5, TOP STD 7 10
VOLUME OF STDS INTO 100 ML
WORKING STANDARDS FOR AUTOMATIC CALIBRATION
VOLUME OF STD INTO 400 ML
TOP STD 7 40
AUTO DILUTION OF TOP STANDARD 7
PERCENT USED OF TOP STANDARD 7 STD 1 0, STD 2 8%, STD 3 12%, STD 4 24%, STD 5 52%, STD 6 76%, TOP STD 7 100%
CALIBRATION STANDARD CROSS CHECK
WHENEVER A NEW STANDARD IS PREPARED FROM A NEW STOCK, THE ACCURACY OF THAT STANDARD MUST BE CHECKED THROUGH THE USE OF A CROSS CHECK
THE NEW TOP STANDARD IS RUN AS A SAMPLE ON A X2 DILUTION, AGAINST A CALIBRATION USING THE OLD STANDARD, AND A COMPARISON MADE.
THE NEW CALIBRATION STANDARD MUST ALSO BE CHECKED AGAINST A NIST TRACEABLE STANDARD.
AQC SOLUTIONS (MATRIX MATCHED AQC)
AMMONIA HIGH AQC STOCK FOR MCERT
AMMONIA LOW AQC STOCK FOR MCERT
HIGH AQC MCERT SPIKE SOLUTION
BRAMPTON FINAL EFFLUENT
AMMONIA HIGH AQC STOCK
CHLORIDE AQC STOCK
LOW AQC MCERT SPIKE SOLUTION
X10 DILUTION CHECK SOLUTION
AMMONIA HIGH AQC STOCK
DI WATER
BRAMPTON FINAL EFFLUENT
FILTERED VIA A 53 MICRON FILTER
STABILITY SHELF LIFE
APPARATUS
SAMPLE COLLECTION AND PRESERVATION
PET BOTTLES AND REFRIGERATED ON ARRIVAL
ANALYSIS CARRIED OUT WITHIN 24 HOURS IDEALLY
SAMPLES STABLE FOR 3 DAYS
SAMPLE PRE-TREATMENT
NO SAMPLE PRE-TREATMENT REQUIRED
AQC SOLUTIONS
SPIKED SAMPLE
UNSPIKED SAMPLE
MINIMUM OF ONE AQC HIGH AND LOW PER 20 SAMPLES
PLUS AN ADDITIONAL HIGH AND LOW AQC AT THE END OF THE BATCH
FOR AMMONIA HIGH MCERT SPIKE AND LOW MCERT SPIKE RAN ALONG AN UNSPIKED SAMPLE
% RECOVERY RESULTS AUTOMATICALLY CALCULATED ON DOWNLOAD, PRINTED AND RETAINED WITH THE RAW DATA AND SUBMITTED ONTO QUACCS
IF THE % RECOVERY FALLS OUTSIDE 3S, TWO CONSECUTIVE RESULTS FALL OUTSIDE 2S OR 8 CONSECUTIVE RESULTS FALL ON THE SAME SIDE ON THE MEAN INVESTIGATE