Method for the detection of phosphine in cereals

Torna indietro

Abstract

A method is described for the total phosphine detection in cereal caryopses, comprising the steps of inserting a sample of cereal caryopses inside a container (1) equipped with hermetic closure (2); adding to the sample an aqueous solution of H 2 SO 4 with a v/v concentration in the range of 5-20%, with obtainment of an aqueous dispersion, and hermetically closing the first container (1); subjecting the aqueous dispersion contained in the first container (1) to the action of microwaves for a time not greater than 3 minutes; drawing a predetermined volume of gas overlying the aqueous dispersion and detecting any phosphine that may be present by means of colorimetric and/or spectrophotometric methods, preferably by bringing it into contact with a predetermined volume of an aqueous solution of AgNO 3 of known molarity, inside a second container (3) with hermetic closure and visually analysing the obtained colour and/or spectrophotometrically measuring the absorbance at 400 nm of the aqueous solution. Equipment for the execution of the aforesaid method is described

Classe Tecnologica

G - Physics

Patent Office

United States Patent and Trademark Office

Numero Deposito

US7678575

Anno Deposito

2007

Anno Concessione

2010

Inventori Pugliesi

Tutti gli inventori

  • Roberto Ranieri
  • Marco Silvestri
  • Angelo Visconti
  • Michelangelo Pascale
  • Francesco Longobardi

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • Barilla G.e R.Fratelli S.p.A.
  • Consiglio Nazionale Delle Ricerche