CN105181433A - Extraction method of chromium in tipping paper for cigarette - Google Patents

Abstract

The invention discloses an extraction method of chromium in tipping paper for cigarette, and relates to the field of a tipping paper technology for cigarette. The method mainly comprises two steps: an inorganic chromium form extraction and an organic chromium form extraction. The extraction method of chromium in tipping paper for cigarette provided by the invention has the advantages of fast extraction speed and thorough extraction with few residuals, thereby guarantying accuracy of chromium detection.

Description

The extracting method of chromium in cigarette tipping paper

Technical field

The present invention relates to cigarette tipping paper technical field, is more particularly the extracting method of chromium in a kind of cigarette tipping paper.

Background technology

Cigarette tipping paper is the part with oral cavity close contact in cigarette sucking process, therefore carrying out product sampling observation for its content of beary metal is a kind of enforceable product quality supervision behavior, the typical inspection element that is subject to comprises As, Hg, Pb, Cd, Cr, and Ni etc., according to current cigarette tipping paper product standard, in listed heavy metal, the Limited Doses of Cr reaches 15mg/kg, this easily may cause higher Cr content relevant containing the use of Cr dyestuff with some, therefore be necessary to carry out emphasis monitoring to the chromium in cigarette tipping paper, and the extraction comparison of chromium bothers in testing process.

Summary of the invention

The object of the invention is, in order to make up the deficiencies in the prior art, to provide the extracting method of chromium in a kind of cigarette tipping paper.

The object of the invention is to be achieved through the following technical solutions:

The extracting method of chromium in cigarette tipping paper, comprises the following steps:

(1) inorganic chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add the NaOH of 5ml200mmol/L and ultrasonic 1 hour, make fiber depth fragmentation to cotton-shaped, adding appropriate acid extract makes final solution keep PH < 3, ultrasound assisted extraction is centrifuging 5 minutes under 4000r/min after 3 minutes, supernatant is transferred in 25ml volumetric flask, constant volume;

(2) Organic Chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add appropriate ethyl acetate and carry out ultrasonic extraction, after centrifuging, get supernatant be settled to 25ml, accurately measure 5ml extract in the PFA bottle of volume 7ml, evaporate into dry at 120 DEG C, then add 2mlHNO3 and carry out airtight digestion 2 hours, after clearing up, solution is transferred in 25ml volumetric flask.

The invention has the advantages that:

In cigarette tipping paper of the present invention, the extracting method extraction rate of chromium is fast, extracts thoroughly residual little, ensure that the accuracy that chromium detects.

Embodiment

The extracting method of chromium in cigarette tipping paper, comprises the following steps:

(1) inorganic chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add the NaOH of 5ml200mmol/L and ultrasonic 1 hour, make fiber depth fragmentation to cotton-shaped, adding appropriate acid extract makes final solution keep PH < 3, ultrasound assisted extraction is centrifuging 5 minutes under 4000r/min after 3 minutes, supernatant is transferred in 25ml volumetric flask, constant volume;

(2) Organic Chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add appropriate ethyl acetate and carry out ultrasonic extraction, after centrifuging, get supernatant be settled to 25ml, accurately measure 5ml extract in the PFA bottle of volume 7ml, evaporate into dry at 120 DEG C, then add 2mlHNO3 and carry out airtight digestion 2 hours, after clearing up, solution is transferred in 25ml volumetric flask.

Claims (1)

1. the extracting method of chromium in cigarette tipping paper, is characterized in that: comprise the following steps:

(1) inorganic chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add the NaOH of 5ml200mmol/L and ultrasonic 1 hour, make fiber depth fragmentation to cotton-shaped, adding appropriate acid extract makes final solution keep PH < 3, ultrasound assisted extraction is centrifuging 5 minutes under 4000r/min after 3 minutes, supernatant is transferred in 25ml volumetric flask, constant volume;

(2) Organic Chromium form is extracted: take the tipping paper sample that shreds through porcelain scissors in right amount in 15mlPP centrifuge tube, add appropriate ethyl acetate and carry out ultrasonic extraction, after centrifuging, get supernatant be settled to 25ml, accurately measure 5ml extract in the PFA bottle of volume 7ml, evaporate into dry at 120 DEG C, then add 2mlHNO3 and carry out airtight digestion 2 hours, after clearing up, solution is transferred in 25ml volumetric flask.