Bacterial counting method
    2.
    发明授权

    公开(公告)号:US10655158B2

    公开(公告)日:2020-05-19

    申请号:US15572555

    申请日:2016-03-30

    摘要: Disclosed is a bacterial counting method, comprising the following steps, S1: preparing a polyaniline/bacterial composite film on the surface of a glassy carbon electrode by electric polymerization; S2: drawing the standard curve of the polyaniline/bacterial composite film modified electrode; and S3: determining the bacterial concentration of the bacteria solution sample to be tested according to the standard curve obtained in step S2. The method does not require the cultivation of the bacteria in the implementation process, such that same takes a short time and is easy to operate; the method uses aniline as the main reagent, and the consumption of the solution to be tested is small, such that the testing cost is low and the equipment is simple; the method has the advantages of a good repeatability and a wide detection linear range; and the method is an easy to operate, short time-consuming, and low cost bacterial counting method. The method is a bacterial counting method based on the polyaniline/bacterial composite film, and can achieve rapid and accurate detection of the bacterial thallus concentration.

    Fluorescent test paper for detecting mercury ions and detection method using the same

    公开(公告)号:US11378519B2

    公开(公告)日:2022-07-05

    申请号:US17053070

    申请日:2019-09-26

    IPC分类号: G01N21/77

    摘要: Fluorescent test paper for detecting mercury ions is firstly prepared, the fluorescent test paper including a fluorescence development area and a standard fluorescent colorimetric card. With reference to an excited color corresponding to a reference channel in the standard colorimetric card, the color corresponding to a carbon quantum dots distribution area on the fluorescent test paper is observed to check the fluorescence detection environment during detection with the fluorescent test paper. In colorimetric detection of the content of mercury ions, the concentration of Hg2+ is detected based on an excited color, in the standard colorimetric card, that corresponds to a standard mercury ion sample and is closest to a color signal in a copper nanoclusters distribution area on the fluorescent test paper.