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What are the advantages of using HPLC with a refractive index detector (RID) in analytical chemistry?
Using HPLC with a refractive index detector (RID) in analytical chemistry offers several advantages. RID is sensitive to a wide range of compounds, making it versatile for different types of samples. It is also non-destructive, allowing for further analysis of the sample after detection. Additionally, RID is compatible with a variety of solvents and is relatively easy to use, making it a popular choice for many analytical chemists.
What is Difference Between HPLC UV detector Spectrophotometer uv detector?
HPLC UV detector is a component used in high-performance liquid chromatography (HPLC) to monitor eluent absorbance, while a spectrophotometer UV detector is a standalone instrument used to measure the absorption of light at different wavelengths. HPLC UV detectors are specifically tailored for chromatography applications, whereas spectrophotometer UV detectors are more versatile and used for various analytical purposes.
Can you use a C18 column for HPLC with fluorescence detector and methanol as the mobile phase?
Yes, you can use a C18 column and methanol as a mobile phase with fluorescence detector. Fluorescence detector is generally used as it can detect the presence of compounds at a very low concentration.
Definition of standard in HPLC?
In HPLC, a standard is a known compound with a defined chemical structure and purity used for comparison and identification purposes. Standards are essential for calibrating instruments, determining retention times, and quantifying unknown compounds in samples during analysis.
Why pyrene using for wavelength accuracy for hplc calibration?
Pyrene is used for wavelength accuracy in HPLC calibration because it has well-defined absorbance peaks at specific wavelengths, making it a reliable tool for verifying the accuracy of the detector in an HPLC system. By comparing the detected wavelength of pyrene to its known absorbance peaks, any discrepancies can be identified and corrected to ensure precise measurement of analyte concentrations during analysis.
What are the advantages of using HPLC with a refractive index detector (RID) in analytical chemistry?
Using HPLC with a refractive index detector (RID) in analytical chemistry offers several advantages. RID is sensitive to a wide range of compounds, making it versatile for different types of samples. It is also non-destructive, allowing for further analysis of the sample after detection. Additionally, RID is compatible with a variety of solvents and is relatively easy to use, making it a popular choice for many analytical chemists.
What is Difference Between HPLC UV detector Spectrophotometer uv detector?
HPLC UV detector is a component used in high-performance liquid chromatography (HPLC) to monitor eluent absorbance, while a spectrophotometer UV detector is a standalone instrument used to measure the absorption of light at different wavelengths. HPLC UV detectors are specifically tailored for chromatography applications, whereas spectrophotometer UV detectors are more versatile and used for various analytical purposes.
How you can analyze pregabalin on HPLC with UV detector?
We can quantitatively analyse pregabalin on hplc with uv detector, wavelength will be 210 n.m. and mobile phase will be 5 % acetonitrile. standard & sample solution preparation should be in mobile phase.
Why is Erbium perchlorate is used in calibration of HPLC?
Erbium has a strong absorption in uv and visible range, It is used in HPlc calibration for the wavelength accuracy verification of the PDA detector.
Can you use a C18 column for HPLC with fluorescence detector and methanol as the mobile phase?
Yes, you can use a C18 column and methanol as a mobile phase with fluorescence detector. Fluorescence detector is generally used as it can detect the presence of compounds at a very low concentration.
Can C18 column for HPLC be used with UV and visible spectra detector and Acetonitril as mobile phase?
Of course.... there isn´t problem....
What are the HPLC Calibration parameters and elaborate it?
1. Flow rate 2. Temp. of column 3. Detector function 4. Resolution
Definition of standard in HPLC?
In HPLC, a standard is a known compound with a defined chemical structure and purity used for comparison and identification purposes. Standards are essential for calibrating instruments, determining retention times, and quantifying unknown compounds in samples during analysis.
What is post run in HPLC?
Post run in HPLC refers to the time after the completion of a chromatographic analysis where the system continues running to ensure that any remaining compounds are fully flushed out of the column and detector to prevent contamination and achieve a clean baseline for subsequent runs. It is an important step to maintain the integrity and performance of the HPLC system.
Which is more sensitive dector in hplc VWD or PDA?
In HPLC, a Photodiode Array (PDA) detector is generally more sensitive than a Variable Wavelength Detector (VWD). This is because the PDA can simultaneously measure absorbance across multiple wavelengths, allowing for better detection of compounds with varying absorbance characteristics. Additionally, the ability to collect spectral data enhances the identification and quantification of analytes, contributing to improved sensitivity.
How does a cobra detector work?
A cobra detector is a radar detector. Radar detectors work the same way a radio receiver does. The radar detector looks for frequencies that a radar gun uses.
Why pyrene using for wavelength accuracy for hplc calibration?
Pyrene is used for wavelength accuracy in HPLC calibration because it has well-defined absorbance peaks at specific wavelengths, making it a reliable tool for verifying the accuracy of the detector in an HPLC system. By comparing the detected wavelength of pyrene to its known absorbance peaks, any discrepancies can be identified and corrected to ensure precise measurement of analyte concentrations during analysis.
