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Method for detecting content of formaldehyde in indoor air

A formaldehyde content, indoor air technology, applied in the direction of color/spectral characteristic measurement, can solve toxic and other problems

Inactive Publication Date: 2017-06-13
SHANGHAI LANDLEAF BUILDING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is our goal to turn an effective and reliable detection method into an efficient and reliable detection method. However, the detection of formaldehyde in indoor air is mostly carried out in accordance with the requirements of the national standard GB18204.2-2014. It was determined that the method involved phenol reagents, a toxic organic reagent

Method used

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  • Method for detecting content of formaldehyde in indoor air
  • Method for detecting content of formaldehyde in indoor air
  • Method for detecting content of formaldehyde in indoor air

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0033] In the embodiment of the detection method of formaldehyde content in a kind of indoor air of the present invention, comprise the following steps:

[0034] S10, using the test solution to prepare a formaldehyde standard stock solution;

[0035] S20, prepare formaldehyde standard solution;

[0036] S30, using spectrophotometry to draw a standard curve;

[0037] S40, collecting indoor air to be measured as a sample;

[0038] S50, performing colorimetry on the collected samples according to the drawn standard curve, and simultaneously measuring the absorbance;

[0039] S60. As a blank control, measure the absorbance.

[0040] Wherein, it should be noted that the test solution in step S10 needs to be prepared before preparing the formaldehyde standard stock solution, specifically including formaldehyde absorption solution, ferric chlorid...

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Abstract

The invention provides a method for detecting the content of formaldehyde in indoor air. The method comprises the following steps of S10, using a testing solution to prepare a formaldehyde standard preparation solution; S20, preparing a formaldehyde standard solution; S30, using a spectrophotometry method to draw a standard curve; S40, collecting the to-be-detected indoor air as a sample; S50, matching color of the collected sample by the drawn standard curve, and measuring light absorbance; S60, performing blank contrasting, and measuring the light absorbance. The method has the advantage that by using a non-toxic reagent to detect, on the basis of effectively improving the working efficiency of a detection person, the sensitivity and accuracy during detection are higher.

Description

technical field [0001] The invention relates to the technical field of toxic and harmful gas detection, in particular to a method for detecting formaldehyde content in indoor air. Background technique [0002] Formaldehyde is a protoplasmic poison. After people inhale high-concentration formaldehyde, severe irritation and edema of the respiratory tract, eye stinging, headache, and bronchial asthma may occur. Direct skin contact with formaldehyde can cause dermatitis, stains, and necrosis. Frequent inhalation of a small amount of formaldehyde can cause symptoms such as headache, fatigue, insomnia, and autonomic disorders. Can cause chronic poisoning, mucosal congestion, skin irritation, allergic dermatitis and other diseases. Long-term inhalation by pregnant women may lead to deformities and even death of newborn babies. Long-term inhalation by men may lead to sperm deformity, death, decreased sexual function, and serious loss of reproductive ability. Formaldehyde has beco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 罗峣陈军卢志强
Owner SHANGHAI LANDLEAF BUILDING TECH CO LTD
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