Studies on the spectrophotometric determination of phosphorus using hydriodic acid as a reducing agent, and a proposed new method applicable to serum and urine

Negrin, Ana Carolina

doi:10.1016/0009-8981(64)90145-7

Cited by 8 publications

(2 citation statements)

References 10 publications

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“…Inter-elementary interference was corrected by the saturation method (Maclntyre, 1961). Mg was estimated by atomic absorption spectrophotometry (Hilger-Watts, SP 700) in 50 % w-propanol ; chloride by an Aminco-Cotlove chloride meter (American Instrument Co. Ltd.); inorganic phosphate by Negrin's (1964) method; non-radio¬ active PAH by the method of Smith (1956). 14C and 3H samples were counted in a liquid scintillation spectrophotometer (Nuclear-Chicago, model 725) using 10 ml.…”

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confidence: 99%

Renal Function in the European Eel (Anguilla Anguilla L.): Changes in Blood Pressure and Renal Function of the Freshwater Eel Transferred to Sea-Water

Jones¹,

Chan²,

Rankin³

1969

Journal of Endocrinology

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A method for the study of renal function and measurement of mean ventral and dorsal aortic blood pressure for the freshwater and seawater\x=req-\ adapted eel, and during transfer of the animal from fresh water to sea-water, is described.Freshwater eels have higher resting blood pressure, p-aminohippuric acid (PAH) and inulin clearance rates and urine flow than seawater eels. Urine from freshwater animals has low Na, K, Ca, Mg and Cl concentrations, while the clearance rate of inorganic phosphate exceeded that of inulin. Urine from seawater animals has high Na, Ca, Mg and Cl concentrations while that of inorganic phosphate was low. Clearance rates for Ca and Mg greatly exceeded those of inulin.During transfer from fresh water to sea-water there was an initial fluctuation in blood pressure, urine flow and PAH and inulin clearance rates which lasted about 2 hr. Thereafter these gradually declined to values observed for the seawater-adapted animal.The significance of PAH and inulin clearance rates in the study of renal function in the eel and in teleosts in general is discussed.

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confidence: 99%

Renal Function in the European Eel (Anguilla Anguilla L.): Changes in Blood Pressure and Renal Function of the Freshwater Eel Transferred to Sea-Water

Jones¹,

Chan²,

Rankin³

1969

Journal of Endocrinology

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“…However, interference by a number of substances in serum or plasma has been reported by Denis and von Meysenbug (1922), Negrin (1964), and Baginski, Foa, and Zak (1967). Such problems encountered in the measurement of inorganic phosphorus in normal urine could be consideravly magnified owing to the very variable composition of urine.…”

Section: Discussionmentioning

confidence: 94%

Urinary inorganic phosphorus determinations

Jung

Parekh

1972

Journal of Clinical Pathology

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SYNOPSIS The Parekh-Jung method for determination of inorganic phosphorus in serum was applied to its determination in urine. Accuracy is good. The mean percentage recovery of added phosphorus was 100-2%. Forty analyses of a sample gave a mean value of 46-71 mg/100 ml i 076 standard deviation (between-batch precision). The relative usefulness of the Parekh-Jung method compared with those other methods is discussed.

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New and rapid procedure for serum phosphorus using o-phenylenediamine as reductant

Morin¹,

Prox²

1973

Clinica Chimica Acta

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Studies on the spectrophotometric determination of phosphorus using hydriodic acid as a reducing agent, and a proposed new method applicable to serum and urine

Cited by 8 publications

References 10 publications

Renal Function in the European Eel (Anguilla Anguilla L.): Changes in Blood Pressure and Renal Function of the Freshwater Eel Transferred to Sea-Water

Renal Function in the European Eel (Anguilla Anguilla L.): Changes in Blood Pressure and Renal Function of the Freshwater Eel Transferred to Sea-Water

Urinary inorganic phosphorus determinations

New and rapid procedure for serum phosphorus using o-phenylenediamine as reductant

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