News from LabRulezICPMS Library - Week 35, 2025

Our Library never stops expanding. What are the most recent contributions to LabRulezICPMS Library in the week of 25th August 2025? Check out new documents from the field of spectroscopy/spectrometry and related techniques!

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This week we bring you application notes by Agilent Technologies, Metrohm and Shimadzu and poster by Thermo Fisher Scientific!

1. Agilent Technologies: Low-Level UV-Vis Haze Detection for Improved Reliability of Li-Ion Battery Electrolytes  

Overcoming quality control blind spots with the Cary 60 UV-Vis and the diffuse reflectance accessory (DRA)

• Application note
• Full PDF for download

Lithium-ion batteries (LIBs) have become indispensable in modern life, powering everything from portable electronics to electric vehicles. As demand grows for higher-capacity, longer-lasting, and more efficient batteries, research efforts continue to focus on optimizing every component, including the electrolyte. 

The electrolyte plays a critical role in battery performance by enabling the transport of ions between the two electrodes. It typically consists of a lithium salt, most commonly lithium hexafluorophosphate (LiPF6 ), dissolved in a mixture of organic carbonate solvents such as ethylene carbonate (EC), ethyl methyl carbonate (EMC), and dimethyl carbonate (DMC). However, these electrolyte formulations are highly sensitive to moisture and prone to degradation over time. This degradation can lead to the formation of particulate matter or impurities that are invisible to the naked eye but can significantly impact electrolyte quality during manufacturing. 

In this application note, we explore how the Agilent Cary 60 UV-Vis spectrophotometer, paired with an Agilent Cary 60 diffuse reflectance accessory (DRA), can be used to assess LIB electrolyte quality. 

Traditional UV-Vis transmission compartments can struggle with low-scattering samples like electrolytes, as scattered light may bypass the detector and lead to inaccurate readings. The Cary 60 DRA mitigates this limitation by enhancing light collection efficiency, making it well-suited for low-level haze analysis.

Experimental

Instrumentation 

Diffuse transmission spectra and haze measurements were collected using the Agilent Cary 60 UV-Vis spectrophotometer controlled by the Agilent Cary WinUV Color software. The software allows users to select from a range of calculation options, including standardized color coordinate systems such as those defined by the Commission Internationale de l’Eclairage (CIE). 

For this application, the "Haze as per D1003" calculation mode was selected, which requires four individual scans to be performed using the DRA integrating sphere.

Conclusion 

This study demonstrated the effectiveness of the Agilent Cary 60 UV-Vis equipped with a diffuse reflectance accessory (DRA) for assessing the quality of LIB electrolytes through haze measurements. The innovative method enabled the detection of particulates and early signs of degradation that are not visible to the naked eye, but can significantly impact battery performance, safety, and lifespan. Haze levels of the solutions increased notably with storage time and exposure to air, confirming the instrument's sensitivity to moisture‑induced changes in electrolyte composition. Measuring low-scattering samples in a standard UV‑Vis transmission compartment can be difficult because scattered light may miss the detector, causing inaccurate measurements. The Cary 60 DRA improves light collection efficiency, making it ideal for low-level haze analysis. As the integrating sphere collects all scattered light, this technique monitors minor changes in electrolyte condition, which is useful for assessing samples stored or transported under different environmental conditions. With the added advantage of automated calculations and reporting through the Agilent Cary WinUV Color software, the method offers a reliable, user-friendly solution for quality control in LIB electrolyte manufacturing and storage. The Cary 60 UV-Vis method helps manufacturers make informed decisions about handling and using electrolytes, ultimately supporting the production of safer, higher‑performing batteries.

2. Metrohm: Determination of olive oil quality parameters and adulteration with NIR spectroscopy 

Near-infrared spectroscopy reduces costs and chemical waste

• Application note
• Full PDF for download

Olive oil quality depends on many factors, such as time spent processing olives after harvest, the production process itself, and olive variety. Due to its high price, virgin olive oil in particular is one of the most vulnerable vegetable oils for food fraud. Many parameters are used to determine the oil quality including the iodine value, free fatty acids (FFA), refractive index, fatty acid composition, and aging indicators such as peroxide value (PV), K232, and induction time. Traditional analysis techniques for olive oil testing like titration or gas chromatography (GC) often require hazardous solvents which can pose health risks and increase laboratory costs. In contrast to these standard methods, the analysis with nearinfrared spectroscopy (NIRS) helps to increase productivity and reduce costs, providing quick results for olive oil quality control

EXPERIMENTAL EQUIPMENT 

A selection of olive oils with varying quality (137 samples) were measured on the OMNIS NIR Analyzer Liquid (Figure 1) in transmission mode (1000–2250 nm) using 8 mm disposable vials. The vial temperature was set and monitored at 40 °C with the built-in vial sensor to ensure consistent measurement performance. The OMNIS software was used for all data acquisition and prediction model development.

CONCLUSION

This Application Note displays the positive attributes of olive oil analysis with near-infrared spectroscopy. Compared to time-consuming conventional analytical methods, measurements performed with NIRS do not need any sample preparation. This ultimately leads to a workload reduction (Table 3) and reduced costs. Aside from the parameters shown in this Application Note, additional olive oil quality parameters like sterol content or moisture content can also be determined with NIRS.

3. Shimadzu: Evaluation of the Temperature Dependency of Tensile Strength of Electrode Materials for Lithium- Ion Batteries 

• Application note
• Full PDF for download

User Benefits

• A thermostatic chamber makes it possible to measure the tensile strength in actual temperature environments. 
• Pneumatic flat grips for foil make it possible to reduce the variation in grip force and stabilizing test conditions. 
• By using a load cell with a wider accuracy guarantee range than a conventional one, it is possible to perform high-accuracy tests even with a small test force

Lithium-ion batteries play an important role in various electronic devices due to their high energy density and excellent charging efficiency. To improve battery performance, battery materials and processing methods are actively being developed. One of the evaluation methods for mechanical properties is strength measurement. The metal (current collector) used in the electrodes of lithium-ion batteries is subjected to tensile force during the manufacturing process. Evaluation of temperature dependence is required because the metal is also subjected to heat during manufacturing. This Application News introduces a workflow consisting of tensile strength evaluation of metal foil used as lithium-ion battery electrodes. The tests were performed under various temperatures to evaluate the temperature dependence of tensile strength. The apparatus used is also described.

Apparatus 

Table 1 shows test apparatus configuration. In this experiment, Precision Universal Testing Machine AGS -V was used and pneumatic flat grips for foil were mounted on it. These grips reduce the swing of the grip faces and their surfaces are processed into special shapes. This reduces the risk of fracture of the specimen at the clamped portion when testing a foil specimen. These pneumatic grips make it possible to mount specimens and to make the gripping force constant for each test. To adjust the temperature of the test space, the Compact-type Thermostatic Chamber TCE-N300A was used. It can be operated by the testing machines operation software TRAPEZIUM X-V. This software can control both the chamber and the testing machine in the same display. This function improves the system convenience.

Conclusion

 Tensile tests using the AGS-V were conducted on three kinds of metal foil used as electrodes in lithium-ion batteries in the thermostatic chamber TCE-N300A. The test results show that the strength tended to decrease with increasing the temperature in all materials. The elongation at failure tended to increase at 180 °C for C1100 and at 100 °C and 180 °C for A1N30 and A1070. 

Pneumatic flat grips for foil make it possible to conduct tests without fracture nor slippage of the specimen at the clamped portion. 

This measurement enables the temperature dependence of the mechanical characteristics of metal foil used as electrodes for lithium-ion batteries to be easily obtained. It is expected to be applied to solving problems such as material selection and processing methods for lithium-ion batteries.

4. Thermo Fisher Scientific: Inductively Coupled Plasma Mass Spectrometry (ICP-MS) for the Analysis of the Spatial Distribution of Trace Elements in Biological Systems 

• Poster
• Full PDF for download

Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is widely recognized as a powerful technique for the determination of trace elements in a variety of sample types. It is able to directly and quantitatively assess the amount of an element (e.g. toxic elements such as As or Hg, but also essential elements such as Cu, Zn, or Se). In some cases, not only the concentration, but also the lateral distribution can provide important information when investigating biological systems. Laser ablation imaging is becoming a well-established tool to visualize both naturally occurring and artificially introduced trace elements; however, there are challenges to overcome in order to achieve high lateral resolution and image contrast.

MATERIALS AND METHODS

Test Method 

For the analysis, a Teledyne CETAC Technologies LSX-213 G2+ laser ablation system was coupled to a Thermo Scientific™ iCAP™ TQ ICP-MS. The iCAP TQ ICP-MS was configured with a high sensitivity interface (Table 1) to ensure the detection of analytes even in low concentrations and small amounts of ablated sample. Prior to the measurements, all plasma and interface related settings were tuned automatically and were fully tailored to the LA-based sample introduction by using the autotune procedures provided in the Thermo Scientific™ Qtegra™ Intelligent Scientific Data Solution (ISDS) Software.

Data Analysis 

Both devices (laser ablation system mass spectrometer) were controlled using the Qtegra ISDS Software. Through the use of dedicated plug-ins, full synchronization of data acquisition, allowing unattended routine operation for overnight runs, was possible. Data acquisition was accomplished using the tQuant virtual evaluation of the Qtegra ISDS Software. Data reduction and image construction were accomplished using self-developed software

What is Elemental Imaging? 

Elemental images or maps refer to an LA-ICP-MS analysis that provides information on the elemental distribution across a two-dimensional area of a sample, for example across the surface of a biological tissue section. As the laser is fired at the sample surface, the sample is moved at a defined and constant rate. This means that the time profile of a line scan can be translated into a distance profile. Gathering multiple profiles across the sample generates a 2D image of the elemental distribution in the sample (3D after moving the laser sampling point in the vertical axis), where signal intensity is directly proportional to concentration.

CONCLUSIONS 

• The LA-ICP-MS system described has been shown to be ideally suited for the high spatial resolution bioimaging analysis of various elements in thin sections in both single and triple quadrupole analysis modes. 
• The use of triple quadrupole technology in the iCAP TQ ICP-MS system clearly improves the images produced for analytes such as Ca (through the analysis of 44Ca 16O+ at m/z 60), iron (through the analysis of 56Fe 16O+ at m/z 72) or Se (through the analysis of 80Se 16O+ at m/z 96). 
• This also enables a wider dynamic range and cleaner backgrounds to reveal additional structural information not detectable by traditional single quadrupole ICPMS.