知识 为什么将溴化钾用作红外光谱分析的参考化合物?5 个主要原因
作者头像

技术团队 · Kintek Solution

更新于 2个月前

为什么将溴化钾用作红外光谱分析的参考化合物?5 个主要原因

Potassium bromide (KBr) is commonly used as a reference compound in IR spectroscopy. This is primarily because it is transparent to infrared light and can be easily formed into pellets with samples. This allows for accurate and reproducible measurements.

5 Key Reasons Why Potassium Bromide is Used in IR Spectroscopy

为什么将溴化钾用作红外光谱分析的参考化合物?5 个主要原因

1. Transparency to Infrared Light

KBr is transparent in the infrared region. This means it does not absorb the wavelengths of light used in IR spectroscopy. This property is crucial because it allows the infrared light to pass through the sample without interference from the matrix material (KBr). The transparency ensures that the spectrum obtained is primarily due to the sample's molecular vibrations and not the matrix.

2. Formation of Pellets

KBr can be easily pressed into pellets with the sample under high pressure. This process is facilitated by the plastic nature of alkali halides when subjected to pressure. The typical composition of a KBr pellet contains only about 1% of the sample by weight. This ensures that the sample is sufficiently dilute for accurate measurement without blocking the infrared light path. The pellet method is particularly useful for solid samples, providing a practical way to analyze them in a form suitable for IR spectroscopy.

3. Reproducibility and Consistency

Using KBr pellets ensures a consistent and reproducible sample presentation. The method allows for the control of the pathlength through the sample, which is essential for obtaining reliable and comparable spectra. The consistency in pellet preparation helps in reducing experimental errors and enhances the accuracy of the spectral data.

4. Comparison with Other Techniques

Although newer techniques like attenuated total reflectance (ATR) exist, the KBr pellet method remains attractive due to its simplicity and the ability to adjust the pathlength. This adjustment is crucial for samples with different absorption characteristics, allowing for optimal spectral acquisition.

5. Sample Preparation Considerations

Proper preparation of KBr pellets is critical. Factors such as the grinding of the KBr mixture, ensuring the sample is dry, maintaining the correct sample-to-KBr ratio, and proper compression of the pellet are essential to avoid issues like cloudy disks or poor spectral quality. These considerations ensure that the resulting IR spectrum has sharp peaks with good intensity and resolution, facilitating accurate interpretation of the data.

Continue Exploring, Consult Our Experts

Discover the ultimate precision for your IR spectroscopy experiments with KINTEK SOLUTION's premium-grade Potassium Bromide (KBr) pellets. Our transparent KBr is meticulously processed to ensure the highest levels of transparency to infrared light, forming a perfect matrix for your samples. Trust in our commitment to reproducibility and consistency, enabling you to achieve sharp, clear spectral peaks and reliable data interpretation. Elevate your spectroscopy results with KINTEK SOLUTION – where quality meets innovation. Shop now for KBr pellets that make a difference!

相关产品

实验室用光学超白玻璃板 K9 / B270 / BK7

实验室用光学超白玻璃板 K9 / B270 / BK7

光学玻璃虽然与其他类型的玻璃有许多共同特征,但在制造过程中使用了特定的化学物质,从而增强了光学应用的关键特性。

氟化钡(BaF2)衬底/窗口

氟化钡(BaF2)衬底/窗口

BaF2 是最快的闪烁体,因其卓越的性能而备受青睐。其窗口和板材对紫外和红外光谱分析具有重要价值。

氮化硼(BN)坩埚 - 烧结磷粉

氮化硼(BN)坩埚 - 烧结磷粉

磷粉烧结氮化硼(BN)坩埚表面光滑、致密、无污染、使用寿命长。

用于电解水的二氧化铱 IrO2

用于电解水的二氧化铱 IrO2

二氧化铱,其晶格为金红石结构。二氧化铱和其他稀有金属氧化物可用于工业电解的阳极电极和电生理研究的微电极。

kbr 2T 压粒机

kbr 2T 压粒机

KINTEK KBR Press 简介 - 专为入门级用户设计的手持式实验室液压机。

高纯硼(B)溅射靶材/粉/丝/块/粒

高纯硼(B)溅射靶材/粉/丝/块/粒

根据您的特定实验室需求量身定制经济实惠的硼(B)材料。我们的产品包括溅射靶材、3D 打印粉末、圆柱、颗粒等。立即联系我们。

氟化钡 (BaF2) 溅射靶材/粉末/金属丝/块/颗粒

氟化钡 (BaF2) 溅射靶材/粉末/金属丝/块/颗粒

以合理的价格购买氟化钡 (BaF2) 材料。我们可根据您的需要提供各种溅射靶材、涂层材料、粉末等。立即订购。

无碱/硼铝硅酸盐玻璃

无碱/硼铝硅酸盐玻璃

硼铝硅酸盐玻璃具有很强的抗热膨胀性,因此适用于需要抗温度变化的应用,如实验室玻璃器皿和烹饪用具。

钛酸钡(BaTiO3)溅射靶材/粉末/金属丝/块/颗粒

钛酸钡(BaTiO3)溅射靶材/粉末/金属丝/块/颗粒

了解我们为实验室定制的钛酸钡 (BaTiO3) 材料系列。我们为溅射靶材、涂层材料、粉末等提供多种规格和尺寸选择。如需了解合理的价格和量身定制的解决方案,请立即联系我们。

有机物质的蒸发坩埚

有机物质的蒸发坩埚

有机物蒸发坩埚,简称蒸发坩埚,是一种在实验室环境中蒸发有机溶剂的容器。

氮化硼 (BN) 陶瓷导电复合材料

氮化硼 (BN) 陶瓷导电复合材料

由于氮化硼本身的特性,其介电常数和介电损耗非常小,因此是一种理想的电绝缘材料。

氮化硼 (BN) 陶瓷部件

氮化硼 (BN) 陶瓷部件

氮化硼(BN)是一种具有高熔点、高硬度、高导热性和高电阻率的化合物。其晶体结构与石墨烯相似,比金刚石更坚硬。


留下您的留言