1996
DOI: 10.1016/0043-1354(96)00008-5
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Monitoring of dissolved reactive phosphorus in wastewaters by flow injection analysis. Part 1. Method development and validation

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Cited by 17 publications
(8 citation statements)
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“…The instrument response increased as reagent flow rate decreased such that the optimal flow rate of both the tin(II) chloride and the molybdate reagent was 0.23 mL min À1 , respectively. At these flows, the ratio of ammonium molydate to tin(II) chloride was 10:1, similar to the ratio of 10:1.5 reported for the manifold used by Benson et al [19,20] and by Hanrahan et al [21] The instrument response increased as carrier flow rate increased up to 0.83 mL min À1 and was constant (AE5%) for flow rates !0.83 mL min À1 , when the reagent flow rates were kept constant. A carrier flow rate of 0.83 mL min À1 provided conditions for maximum formation of the molybdenum blue complex, while conserving reagent, and was selected as the optimal carrier flow rate.…”
Section: Manifold Optimizationsupporting
confidence: 69%
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“…The instrument response increased as reagent flow rate decreased such that the optimal flow rate of both the tin(II) chloride and the molybdate reagent was 0.23 mL min À1 , respectively. At these flows, the ratio of ammonium molydate to tin(II) chloride was 10:1, similar to the ratio of 10:1.5 reported for the manifold used by Benson et al [19,20] and by Hanrahan et al [21] The instrument response increased as carrier flow rate increased up to 0.83 mL min À1 and was constant (AE5%) for flow rates !0.83 mL min À1 , when the reagent flow rates were kept constant. A carrier flow rate of 0.83 mL min À1 provided conditions for maximum formation of the molybdenum blue complex, while conserving reagent, and was selected as the optimal carrier flow rate.…”
Section: Manifold Optimizationsupporting
confidence: 69%
“…The optimized manifold conditions ( Figure 2) provided a 33% increase in sensitivity and the limit of detection (LOD) was three times lower than with the original manifold conditions. [19,20] Reagent composition was unchanged but reagent flow rates were lower and sample injection volume was larger in the final optimized manifold. Seven phosphate standards (20-150 mg L À1 P) with triplicate injections of each standard gave linear calibration graphs (r 2 > 0.99) with a gradient of 55 arbitrary transmittance units per mg L À1 P and an intercept of 263 arbitrary transmittance units with a good RSD (<5%).…”
Section: Laboratory Fi Calibration Under Optimized Manifold Conditionsmentioning
confidence: 99%
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“…The efficiency of nitrate reduction in the cadmium column was validated regularly to be over 95% by running a nitrite standard with the same concentration as the highest nitrate standard. SRP was determined by the molybdenum blue complex method (BENSON et al, 1996). Detection limit was 0.04 µmol L -1 .…”
Section: Analytical Measurementsmentioning
confidence: 99%
“…The scientist attempts have been made at the preconcentration of phosphate [14][15][16]. The solvent extraction [9,17] and solid phase extraction with an ion associate complex [8] have used and several reagents have been reported, such as Malachite Green [18], Crystal violet [19], Rhodamine 6G [8,9,17] and Rhodamine B [20] for the preconcentration of phosphate.…”
Section: Introductionmentioning
confidence: 99%