GB/T 34455-2017 in English
VALIDPaper，board and pulps-Determination of 2，2-bis ( 4-hydroxyphenyl) propane (bisphenol A)-Liquid chromatography
- Issued on:2017-09-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 34455-2017纸、纸板和纸浆 2,2-二（4-羟基苯基）丙烷（双酚A）的测定 液相色谱法》由TC141（全国造纸工业标准化技术委员会）归口，主管部门为中国轻工业联合会。
Introduction
GB/T 34455—2017 Standard Overview
This standard specifies the method for the determination of bisphenol A (2,2-bis(4-hydroxyphenyl)propane) in paper, paperboard and pulp by liquid chromatography. It is applicable to the determination of bisphenol A content in various types of paper and pulp, with a detection limit of 0.05 mg/L (milligrams per liter) or 0.5 mg/kg (milligrams per kilogram).
Background of Standard Formulation and Analysis of Technological Evolution
Bisphenol A is a chemical substance widely used in the production of plastics, epoxy resins, etc., but studies have shown that it may cause harm to the human body and the environment. With the enhancement of environmental awareness, countries have an increasing demand for the detection of bisphenol A in pulp and products. This standard is based on high performance liquid chromatography technology and has the characteristics of high sensitivity and strong selectivity.
Determination principle
| Steps | Description |
|---|---|
| Extraction | The sample was cut into pieces and added to a methanol-water solution, and then extracted at 70°C for 1 hour with shaking. |
| Separation | The filtrate was separated by a high-performance reverse phase chromatography column (C₁₈). |
| Detection | A fluorescence detector was used with an excitation wavelength of 227nm and an emission wavelength of 313nm to qualitatively and quantitatively determine bisphenol A. |
Requirements for instruments and reagents
Key instruments include high performance liquid chromatograph (with fluorescence detector), constant temperature oscillating water bath, etc. For reagents, first-grade methanol and first-grade water according to GB/T6682 standard are required.
Comparison of standard frameworks
| Dimensions | Features of this standard | Comparison with other methods |
|---|---|---|
| Detection sensitivity | The detection limit can reach 0.05 mg/L, which meets the needs of trace analysis. | Higher than the detection limit of traditional spectrophotometry. |
| Detection time | HPLC usually completes the analysis within 15-20 minutes. | Compared with gas chromatography, it takes a little longer but has better selectivity. |
| Scope of application | Applicable to various paper and pulp samples. | Not applicable to solid or high matrix samples. |
Implementation suggestions
Actual application case:A papermaking enterprise tested the bisphenol A content in its products according to this standard to ensure that it met the environmental protection requirements for export to the European Union. By optimizing the extraction conditions and chromatographic parameters, the company achieved efficient and accurate internal quality control.
Conclusion
GB/T 34455-2017 standard provides a scientific basis for the detection of bisphenol A in pulp and paper products. With the increasingly stringent environmental regulations, this method will play an important role in product quality control and environmental monitoring.
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