发明名称 |
METHOD FOR THE DETECTION OF PHOSPHINE IN CEREALS |
摘要 |
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 H2SO4 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 AgNO3 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.
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申请公布号 |
CA2594957(A1) |
申请公布日期 |
2008.01.28 |
申请号 |
CA20072594957 |
申请日期 |
2007.07.25 |
申请人 |
BARILLA G. E R. FRATELLI S.P.A.;CONSIGLIO NAZIONALE DELLE RICHERCHE |
发明人 |
VISCONTI, ANGELO;RANIERI, ROBERTO;SILVESTRI, MARCO;PASCALE, MICHELANGELO;LONGOBARDI, FRANCESCO |
分类号 |
G01N33/10;G01N21/31;G01N21/78;G01N27/00;H01J49/26 |
主分类号 |
G01N33/10 |
代理机构 |
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