Greening microwave-assisted digestion method using hydrogen peroxide for determination of elemental impurities by ICP-OES in antihypertensive active pharmaceutical ingredients

Senger, Caroline M.; Dornelles, Isadora S.; Queiroz, Jennefer M.; Mello, Paola A.; Muller, Edson I.; Muller, Aline L.H.

doi:10.1016/j.jpba.2023.115802

Cited by 3 publications

References 29 publications

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Microwave‐Assisted Sample Preparation for Spectrochemical Analysis

Nóbrega,

Donati

2024

Encyclopedia of Analytical Chemistry

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Microwave‐assisted sample preparation has represented a major developmental step in combining the overall quality and speed of spectrochemical analysis with the initial analytical step of converting solid samples into representative solutions. Instrumentation and applications involving samples with organic and inorganic matrices are discussed in detail after briefly addressing the fundamentals of the method. The feasibility of using diluted acid solutions and pressurized oxygen vessels for sample digestion is rationalized and clearly related to advances in reaction vessel materials and the interaction between matter and microwave radiation. Applications based on microwave‐induced combustion (MIC) and procedures developed for chemical speciation are also highlighted. A list of ideal attributes for microwave‐assisted sample preparation is proposed and evaluated considering the state of the art. Major needs, mainly related to the capacity of digesting large sample masses and improvements in sample throughput, are also highlighted.

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Microwave‐Assisted Sample Preparation for Spectrochemical Analysis

Nóbrega,

Donati

2024

Encyclopedia of Analytical Chemistry

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Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

Bolea-Fernandez,

Clough,

Fisher

et al. 2024

J. Anal. At. Spectrom.

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Measurement of Copper, Zinc, Lead, and Chromium in Marine Mud Samples by Microwave Digestion ICP-OES Using Chemometric t- Test

Wang,

Guan,

Wan

et al. 2024

Preprint

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Establishing an analytical method to interpret trace element changes is crucial for methane hydrate seepage tracking, exploration, and exploitation. However, research on this important issue is still limited, posing a challenge for trace element determination in marine mud samples. In this study, we first applied t-tests on independent samples for XRF tests with soil QC samples and sea mud samples. The results showed no statistically significant difference between sea mud samples and soil QC samples. Thus, soil QC samples were used for the methodology study. We investigated the microwave digestion procedure, the selection of spectral line wavelengths for analytical tests, the limit of detection (LOD) and quantification (LOQ), spiked recoveries, precision, accuracy, and the interference of coexisting elements on spectral line selection. Results indicated that the use of inverse aqua regia and 1 mL HF as a mixed acid system is effective. Copper and zinc elements require temperatures above 150 °C, lead and cadmium above 180 °C, and chromium should not exceed 210 °C to avoid volatilization. Analytical spectra for copper, zinc, chromium, and lead were selected at 324.752, 213.857, 267.716, and 220.353 nm wavelengths. The correlation coefficients of the standard curves were above 0.9997, with detection limits ranging from 0.0004 to 0.0105 mg/L and quantification limits from 0.0017 to 0.0419 mg/L. Spiked recoveries ranged from 95.5% to 103.7%. The method's accuracy was verified using soil standard samples (GSS-4 and GSS-5). The ICP-MS method tested sea mud samples for t-test comparison, and statistical results showed no significant difference.

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Greening microwave-assisted digestion method using hydrogen peroxide for determination of elemental impurities by ICP-OES in antihypertensive active pharmaceutical ingredients

Cited by 3 publications

References 29 publications

Microwave‐Assisted Sample Preparation for Spectrochemical Analysis

Microwave‐Assisted Sample Preparation for Spectrochemical Analysis

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

Measurement of Copper, Zinc, Lead, and Chromium in Marine Mud Samples by Microwave Digestion ICP-OES Using Chemometric t- Test

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