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Ultra-wide infrared band colorimetric ware and preparation method thereof

An infrared band and cuvette technology, applied in the direction of material analysis, measuring devices, instruments, etc. through optical means, to achieve the effect of wide application prospects and low price

Inactive Publication Date: 2013-11-13
JIANGSU ENVIRONMENTAL MONITORING CENT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the use of Si as a cuvette window, especially a special cuvette window for infrared analysis, by reasonably controlling the thickness of the Si sheet, taking into account the transmittance and mechanical strength.

Method used

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  • Ultra-wide infrared band colorimetric ware and preparation method thereof
  • Ultra-wide infrared band colorimetric ware and preparation method thereof
  • Ultra-wide infrared band colorimetric ware and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 (making of Si window cuvette)

[0037] An ultra-wide infrared band cuvette is composed of a cuvette quartz cell body 1 and a cuvette Si window 2, and the material of the light-transmitting window is Czochralski silicon single crystal of optical material level. The thickness of the Si window material is 1mm (±0.1mm), and the parallelism of the window material is ≤3 arc minutes. The cell body of the cuvette is made of low hydroxyl quartz material.

[0038] The preparation method of ultra-wide infrared band cuvette, it comprises the following steps:

[0039] (1) Czochralski silicon single crystal slicing, grinding, optical double-sided polishing, non-coating (no coating) of optical material level, made into a thickness of 1 (±0.1) mm, a width of 5-35 (±0.1) mm, and a height of 10 ~40 (±0.1)mm rectangular window or 1(±0.1)mm thick, 5~40(±0.1)mm diameter circular window, and the parallelism of the window material is ≤3 arc minutes;

[0040] (2) The U-shaped o...

Embodiment 2

[0042] Example 2 (A1750~1735—olive oil mass-volume concentration curve drawing)

[0043] Use high-purity carbon tetrachloride to configure olive oil solutions with different concentrations, and make a standard curve after drying with anhydrous sodium sulfate. Use a Si window with a 40mm optical path cuvette to measure the peak area value of each concentration (instrument integration). The obtained curve is very linear, and the results are shown in Table 1:

[0044] Table 1 A1750~1735—olive oil mass-volume concentration

[0045]

Embodiment 3

[0046] Embodiment 3 (determination of different concentrations of oils)

[0047] Use high-purity carbon tetrachloride to configure olive oil solutions with different concentrations (2, 5, 10, 20, 25, 50, 100, 200ppm), dry them with anhydrous sodium sulfate, and use Si windows with 40mm optical path cuvettes , measured at 2930cm -1 、2960 cm -1 、3030 cm- 1 and 1750~1735 cm -1 Absorbance at (A 1 ), the peak height of the measured oil is proportional to the concentration.

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Abstract

The invention discloses an ultra-wide infrared band colorimetric ware and its preparation method and belongs to the field of infrared spectroscopy. A light transmission portion window material of the ultra-wide infrared band colorimetric ware is a Czochralski silicon wafer of the optical material grade. Transmission range of the Si window material is 8300-79cm<-1> and its thickness is 1mm + / - 0.1mm and simultaneously parallelism of the window material is less than or equal to 3 arcminutes. According to the adopted polysilicon of the optical material grade, its thickness is 1mm + / - 0.1mm and simultaneously parallelism of the window material is less than or equal to 3 arcminutes. The ultra-wide infrared band colorimetric ware provided by the invention can be used for rapid qualitative and quantitative determination of oils in water and can have low infrared absorption of a liquid sample at 8300-70 cm<-1>. The infrared colorimetric ware obtained in the invention can be used for quantitative analysis of petroleum and plant and animal oil as well as in situ testing of medicaments and chemical reactions. In addition, the manufacturing cost of the infrared colorimetric ware is similar to that of a quartz colorimetric ware. Therefore, the ultra-wide infrared band colorimetric ware has a wide application prospect in the field of infrared analysis.

Description

technical field [0001] The invention relates to a cuvette used in the field of infrared spectrum detection and a preparation method thereof, in particular to an ultra-wide infrared band cuvette used for infrared absorption testing of liquid samples and a preparation method thereof. Background technique [0002] At present, traditional cuvettes are mostly made of quartz materials, because they are in the 800 cm -1 -2000cm -1 There is a strong absorption between them, which leads to the inability to test various functional groups such as hydroxyl group and carbonyl group, which affects the range of application of Fourier transform infrared spectroscopy in testing liquid samples. [0003] Taking Fourier transform infrared spectrometer as an example: the infrared oil measuring methods widely used abroad are EPA (1978) Method 418.1, ASTM (2003) Method D 3921-96 and APHA (2000) Method 5520C, and domestically The national standard GB / T 16488-1996 and its upcoming revision (draft ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/03C03C27/10
Inventor 唐松林吕小勇王经顺章勇钟声张艳艳
Owner JIANGSU ENVIRONMENTAL MONITORING CENT
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