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Ion chromatography is a method for detecting ionic components in liquid samples.
Ion chromatography is a method for detecting ionic components in liquid samples. - Qualitative and quantitative analysis of ionic components is possible. - Analysis can be performed with a small amount of sample (a few mL).
![[Analysis Case] TMAH Analysis Case in Si-containing Solution by IC Method](https://image.mono.ipros.com/public/product/image/3cc/2000246388/IPROS9149977408791280041.jpg?w=280&h=280)
The measurement of amines is possible using the IC (Ion Chromatography) method.
Tetramethylammonium hydroxide (TMAH) is used as a developing solution and etching solution in semiconductors. When measuring the concentration of TMAH solution used in Si etching solutions, the large amount of dissolved Si can become an impurity and affect the measurement results. However, evaluation using the IC (ion chromatography) method allows for quantitative analysis of TMAH concentration without being influenced by Si.
![[Analysis Case] Analysis of Corrosive Components in Indoor Atmosphere](https://image.mono.ipros.com/public/product/image/f91/2000271865/IPROS58830185047897470355.jpeg?w=280&h=280)
It is possible to analyze ion components in the atmosphere using the impinger collection method.
In the field of semiconductors and their manufacturing processes, it is considered important to control inorganic and organic substances present in the environment. At MST, it is possible to collect components from the indoor atmosphere using the impinger collection method and analyze the types and quantities of corrosive components in the atmosphere. This time, we will introduce a case analyzed using the impinger collection-ion chromatography method.
High-performance liquid chromatography (HPLC) is a method that separates and detects components in a liquid by utilizing the differences in interactions between the stationary phase and the mobile phase.
- Compounds that are relatively low molecular weight and highly polar, such as organic acids, can also be analyzed. - Low polarity compounds, such as lipids, can also be analyzed. - By using the post-column method, it is possible to eliminate the effects of interfering components that could not be completely separated. - Quantification of polymers and measurement of molecular weight distribution are possible.
It is possible to analyze cation components in liquid samples.
As electronic devices are increasingly used in various everyday locations, ensuring the reliability of products has become important. Since it is possible for the copper used in the wiring of printed circuit boards to migrate and cause defects in high temperature and high humidity environments, it is crucial to evaluate the components that promote migration. This case study introduces an example of quantitative analysis of cation components eluted from printed circuit boards using ion chromatography (IC). Thus, IC is an effective method for evaluating the corrosion components on the surface of solid samples.
![[Analysis Case] Evaluation of Gas in Lithium-Ion Secondary Batteries](https://image.mono.ipros.com/public/product/image/76d/2000246587/IPROS8380196320684141107.jpg?w=280&h=280)
Qualitative and quantitative analysis of gas components in batteries.
The electrolyte of lithium-ion secondary batteries is known to decompose and gasify due to repeated charging and discharging. By using GC-TCD and GC/MS, the decomposed gas components can be detected with high sensitivity. GC-TCD can analyze the composition ratios of eight components (H2, O2, N2, CO, CH4, CO2, C2H4, C2H6), while GC/MS can qualitatively analyze various decomposition products. We also support gas analysis in not only laminate-type cells but also coin-type and prismatic cells, as well as cells using ionic liquids.
![[Analysis Case] Evaluation of Nitrogen Components in Solution](https://image.mono.ipros.com/public/product/image/598/2000246856/IPROS3047104988308217841.jpg?w=280&h=280)
It is possible to analyze inorganic nitrogen by form.
Nitrogen is utilized in various forms across a wide range of fields including chemistry, materials, food, and pharmaceuticals. Nitrogen compounds consist of inorganic nitrogen compounds such as nitrates, nitrites, and ammonia, as well as organic nitrogen compounds like amino acids. In the case of samples in aqueous solution, inorganic nitrogen compounds such as nitrate ions, nitrite ions, and ammonium ions can be evaluated using ion chromatography, while organic nitrogen can be assessed using HPLC or LC/MS. Total nitrogen, which includes both inorganic and organic nitrogen compounds, can be evaluated using spectrophotometry.
