ニュース
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FTIR in Plastics and Polymer Identification: Key Applications and Advantages
読む もっと読むFTIR Accessories (Fourier Transform Infrared Spectroscopy) has become an essential analytical tool for identifying plastics and polymers. The principle of FTIR relies on the characteristic absorption of infrared light by different functional groups in polymer molecules. By comparing the sample spectrum to a spectral database, FTIR enables rapid qualitative, quantitative, and structural analysis. Its applications span research and development, production quality control, compliance testing, and recycling processes. Quick Identification of Raw Materials and Authenticity Verification Plastics come in various types, including PE, PP, PVC, ABS, PET, and PC, each with unique molecular structures and corresponding infrared absorption peaks. For example: FTIR allows manufacturers to quickly confirm whether incoming raw materials […]
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Background Interference in FTIR Analysis: Sources and Effective Elimination Methods
読む もっと読むIn FTIR Accessories, background interference has a direct impact on baseline flatness, peak shape accuracy, and the reliability of both qualitative and quantitative analysis. Uncontrolled interference can obscure weak absorption bands, distort spectral features, and compromise reproducibility, particularly in trace or high-precision measurements. To support routine laboratory operation and troubleshooting, the most common sources of background interference and their corresponding mitigation strategies are summarized below. Table 1. Common FTIR Background Interference and Practical Countermeasures Interference Category Typical Spectral Features Primary Cause Recommended Action Atmospheric H₂O Broad band near 3400 cm⁻¹; peak at 1640 cm⁻¹ High ambient humidity Background scan synchronization; dry gas purging; humidity control Atmospheric CO₂ Peaks at 2360, […]
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Five Key Factors Affecting the Resolution of Infrared Spectroscopy
読む もっと読むThe resolution of infrared spectroscopy determines how clearly spectral peaks are separated, how accurately peak positions are identified, and how reliably overlapping signals can be analyzed. In Fourier Transform Infrared Spectroscopy (FTIR Accessories), resolution is not controlled by a single parameter but by a combination of hardware performance, optical quality, and data processing settings. The five most critical factors are outlined below. 1. Moving Mirror Travel Distance of the Interferometer The moving mirror displacement in the interferometer is the fundamental hardware factor governing FTIR resolution. Resolution is inversely proportional to the maximum optical path difference generated by the moving mirror. In simplified terms, a longer mirror travel distance produces a […]
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標準操作手順：FTIR分析用高品質KBrペレットの調製
読む もっと読む目的 高透過率で不純物のないKBrサンプルディスクを作成するための標準化されたプロセスを定義し、FTIR 分光法における明確な特性ピークを確保し、ベースライン干渉を最小限に抑える。材料と環境仕様 機器の準備 段階ごとの手順 段階A：混合と粉砕 段階B：金型の組み立てとプレス 品質検査（QC） 適格なKBrペレットは、半透明から透明（薄い氷のよう）で、表面が滑らかで、粒状性が目に見えないものでなければならない。観察事項 起こりうる原因 是正処置 不透明/白いペレット 粒子が大きい、または圧力が低い 粉砕時間を長くする；プレスゲージを確認する 曇った斑点 空気または水分が閉じ込められている 真空が機能していることを確認する；KBrを長く乾燥させる 亀裂/破損 急激な減圧または不均一な装填 圧力開放を遅くする；パウダーを水平にする 大きい [...]...