Описание

Схема автоматического испытания пластификатора

Automatic Food plasticizer tester
Application field food
Food related plasticizer (phthalate esters) is a hot issue in the current food industry, China Food Association analysis believes that automatic plasticizer (пластификатор) detection scheme: Through a large number of comprehensive tests of food products across the country, food products basically contain plasticizer ingredients, 2.32мг/кг (больше, чем 8 times of the national regulations), low 0.495mg/kg (больше, чем 1.7 times of the national regulations), average 0.537mg/k g (more than about 2 times of the national regulations). The content of high-grade food is higher, and the content of low-grade food is lower. Пластификатор, also known as plasticizer, is a polymer material additive widely used in industry. Adding this substance in plastic processing can make its flexibility enhanced, easy to process, and can be legally used for industrial purposes. Since May 2011, six kinds of phthalate plasticizers, including DEHP, DINP, DNOP, DBP, DMP and DEP, were detected successively in food from Taiwan, Китай, and DIDP was detected in medicine. Since then, тот “туман” effect of plasticizer continues to spread, in drinks, еда, convenience food and drugs continue to be exposed after the plasticizer exceeded the standard, its lethality let many people talk about “пластик” изменение цвета. Excessive plasticizer in food will have serious harm to the human body, long-term uptake of plasticizer will interfere with human endocrine disorders disorders, will also increase the burden of liver and kidney, causing chronic damage to the immune system, digestive system, serious will also lead to liver cancer, its toxicity is 20 times of melamine, Ministry of Health emergency announcement, will phthalate esters (also called phthalates) class substances, Include in the list of non-edible substances that may be illegally added to food and food additives that are easy to abuse.

Guangdong set spectrum technology | guangzhou jingu scientific instrument co., LTD is a company that specializes in industry hot solution, the plasticizer for food industry hotspot, in accordance with our country on the determination of phthalates in food “(GB/T21911-2008) стандарты, research and development of new a set of automatic plasticizer (пластификатор) detection scheme, This program has two certifications, for the accurate analysis and detection of food plasticizers – phthalates in the status of the domestic.

Automatic Food plasticizer tester
я. Main performance characteristics:

1. Friendly man-machine dialogue interface makes your operation simpler.
2. Shunt/non-shunt injection system makes analysis flexible and convenient.
3, with two way valve parts control system, удобно реализовать автоматический отбор проб онлайн.
4, high precision EFC (поток) system makes your flow at a glance, can more accurately set the gas flow.
5, comprehensive detection and fault diagnosis system, so that you can quickly judge and solve the problem of the instrument.
6, Wider temperature control range: ambient temperature +5ºC ~ 450ºC, so that the sample analysis range is wider.
7, can install the United States HP-5890 gas chromatograph micro thermal conductivity detector, достигать * docking.
8, the best cut-off protection system, can avoid the detector and chromatographic column damage to the greatest extent.
9, column box can be installed ultra-low temperature control system, low -80ºC ultra-low temperature control, to meet your low boiling point material analysis needs.
10. The intercolumn compensation circuit allows the drift of the baseline to be electronically compensated during the program’s heating operation, уменьшение сложности, вызванной вторым столбцом, детектор и вспомогательная система потока. Two single-column compensation channels can be installed simultaneously.

Два, temperature control index:

Automatic Food plasticizer tester
III. Technical indicators of detector:

1, hydrogen flame ionization detector (ПИД) :

Cylinder collector structure design, quartz nozzle, response *

Предел обнаружения: ≤8×10-12g/s(n-cetane/isoctane)

Базовый шум: ≤ 6×10-12 A/H

Baseline drift: ≤2×10-12A/30min

Linearity: ≥106

Автоматическое зажигание

Stabilization time: ten minutes

2, thermal conductivity detector (ТЦД) : the use of semi-diffuse structure, the power supply adopts constant current control mode

Чувствительность: ≥2500mV·ml/mg(n-cetane/isoctane).

Базовый шум: ≤20μV.

Baseline drift: ≤100μV/30min.

Linear >=104

Four, TP20-GC food plasticizer detection gas chromatograph analysis conditions:

AB-5 quartz capillary column: 30M*0.25mm*0.25um

Carrier gas: Hydrogen flow rate 1ml/min

Inlet temperature: 250ºС

Инъекционный метод: no shunt injection

Temperature of detector: 300ºС

Размер образца: 1ул

Heating procedure: the initial column temperature was 60ºC and kept for 1min

The temperature was heated at 20ºC/min to 220ºC for 1min

Then heat up at 5ºC/min to 280ºC for 4min

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