Method for fast detection of formaldehyde

A detection method and formaldehyde technology, applied in the detection field, can solve the problems of endangering life and safety, inconvenient detection work, complicated detection methods, etc., and achieve the effects of convenient use, fast detection speed and simple detection method.

Inactive Publication Date: 2005-11-23
李艳莉
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Problems solved by technology

[0002] At present, after decorating the family, if the decorative materials that do not meet the environmental protection requirements are used, this material will release a harmful gas containing formaldehyde, and the human body will be poisoned after absorbing the gas containing formaldehyde. It will also endanger people's lives. Therefore, after the home is decorated, it is necessary to eliminate and detect harmful substances containing formaldehyde in the room to ensure that the harmful gases in the room cannot exceed the standards set by the state, otherwise it will affect People's health, the method that people usually use to detect indoor formaldehyde and other harmful pollution is to use testing instruments to detect, and sometimes it is necessary to sample the air, and then bring the sampled air back to the laboratory for testing to get the final result. In this way, although the indoor harmful air and its content can be detected, the detection method is very complicated, the detection time is relatively long, and a variety of instruments are used for auxiliary detection, which brings great benefits to the detection work. Inconvenience

Method used

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Embodiment Construction

[0019] The required instruments and medicines for the detection method of the present invention are as follows: atmospheric sampler, large-scale bubble absorption tube, 10ml graduated cylinder, color comparison card, 50-100ml distilled water absorption liquid, phenol reagent containing 0.01-13mg, containing 0.1mg-100mg Composed of ferric ammonium sulfate and absorption dish, its operation steps are as follows:

[0020] a. Before testing: test the space under natural ventilation, close the external doors and windows for 1 hour, and close the doors and windows during the test;

[0021] b. Preparation of absorption solution: open the cover of the absorption dish, pour 10mg of phenol reagent in white powder form and 80ml of distilled water absorption solution into the absorption dish, close the cover of the absorption dish, and gently shake the absorption dish for about half a minute When the reagent is dissolved, combine the absorption liquid bottle and measuring cylinder, measur...

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Abstract

The invention discloses a rapid test method for formaldehyde, which comprises the following steps: a. keeping tested spacing natural drafted, closing the windows and door for 0.5-2 hours before the test; b. making absorption liquid; c. using atmospheric sampler to sample air; d. color developing of formaldehyde absorption solution; e. color matching and reading. The invention has advantage of rapid testing about 35 minutes for all, simple testing method and rapid testing result of formaldehyde destiny by color contrasts.

Description

technical field [0001] The invention relates to a detection method, in particular to a method capable of rapidly detecting formaldehyde content from the air. Background technique [0002] At present, after decorating the family, if the decorative materials that do not meet the environmental protection requirements are used, this material will release a harmful gas containing formaldehyde, and the human body will be poisoned after absorbing the gas containing formaldehyde. It will also endanger people's lives. Therefore, after the home is decorated, it is necessary to eliminate and detect harmful substances containing formaldehyde in the room to ensure that the harmful gases in the room cannot exceed the standards set by the state, otherwise it will affect People's health, the method that people usually use to detect indoor formaldehyde and other harmful pollution is to use testing instruments to detect, and sometimes it is necessary to sample the air, and then bring the samp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 李艳莉尹诗
Owner 李艳莉
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