Potassium

CAS Number7440-09-7
Molecular FormulaK
Molecular Weight39.098
InChI KeyNTTOTNSKUYCDAV-UHFFFAOYSA-N
Synonyms
  • Potassium
  • 7440-09-7
  • potasio
  • UN 1420
  • UN 2257
  • EINECS 231-119-8
  • Potassium, metal
  • UNII-RWP5GA015D
  • 19K
  • K
  • Kalium
  • potassium atom
  • 31079-13-7

Applications:

Separation of Silver and Potassium Ions on Newcrom AH Column

2020-10-21
HPLC.cloud View on hplc.cloud Silver and potassium ions can be separated on a mixed-mode Newcrom AH column with a simple isocratic mobile phase consisting of water, acetonitrile (ACN) and methanesulfonic acid.  By adjusting the amount of acetonitrile used in the mobile phase, the elution order of the ions can be reversed.  The ions can be detected using a conductivity detector.

Condition

Column Newcrom AH, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN
Buffer Methanesulfonic acid  - 10 mM
Flow Rate 1.0 ml/min
Detection Conductivity
 

Description

Class of Compounds Hydrophilic, Metal, Ion
Analyzing Compounds Silver, Potassium
   
Application Analytes:
Potassium
Silver

Separation of Sodium and Potassium Ions on Newcrom AH Column

2020-10-21
HPLC.cloud View on hplc.cloud     Sodium and potassium ions can be separated on a mixed-mode Newcrom AH column with a simple isocratic mobile phase of water, acetonitrile (ACN) and methanesulfonic acid.  It can be detected using a conductivity detector.

Condition

Column Newcrom AH, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O - 50/50%
Buffer Methanesulfonic acid  - 10 mM
Flow Rate 1.0 ml/min
Detection Conductivity
 

Description

Class of Compounds Hydrophilic, Metal, Ion
Analyzing Compounds Sodium, Potassium
   
Application Analytes:
Potassium
Sodium

HPLC Separation of Sodium, Potassium Ions and Tetramethylammonium Chloride on Newcrom AH Column

2020-09-08
HPLC.cloud View on hplc.cloud Tetramethylammonium chloride is a quaternary ammonium salt used widely as a reagent in industrial applications.  It can be separated from sodium and potassium chlorides on a mixed-mode Newcrom AH column with a simple isocratic MS-compatible mobile phase of water, acetonitrile (ACN) and ammonium formate (AmFm) buffer.

Condition

Column Newcrom AH, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O - 50/50%
Buffer AmFm pH 3.0- 10 mM
Flow Rate 1.0 ml/min
Detection CAD (Corona) MS- compatible mobile phase
 

Description

Class of Compounds Hydrophilic, Metal, Ion
Analyzing Compounds Sodium, Potassium, Tetramethylammonium

Application Analytes:
Potassium
Sodium
Tetramethylammonium

Simultaneous Analysis of Glucose, Sodium, Potassium and Calcium Ions

2011-07-08
chr_304.gif Neutral sugar, monovalent and divalent cations were separated in HILIC/cation-exchange mode on a Primesep N mixed-mode column. Mobile phase is compatible with LC/MS and method can be used for analysis polar molecules in HILIC, cation-exchange or anion-exclusion modes.

Condition

Column Primesep N, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmAc pH 4.0
Flow Rate 1.0 ml/min
Detection ELSD 50C
 

Description

Class of Compounds Ions, Hydrophilic, Ionizable
Analyzing Compounds Potassium, Sodium, Calcium, Glucose
 
Application Analytes:
Calcium
Potassium
Sodium

Application Detection:
ELSD/MS Detection

Separation of Sodium, Potassium, Lithium, and Ammonium in Mixed-Mode HPLC

2010-05-05

Separation type: Liquid Chromatography Mixed-mode



Inorganic cations and ammonia are usually analyzed by ion-exchange chromatography with a conductivity detector. Mixed-mode chromatography achieves the same goal with an ELSD detector. In addition to retaining ions, mixed-mode column can retain hydrophobic molecules also, making it possible to analyze a wide variety of ionic and non-ionic compounds in one run. In this method sodium, potassium, and lithium ions were separated along with ammonium ions on a Primesep 100 column. Detection technique is ELSD.

Condition

Column Primesep 100,  4.6x250 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer TFA
Flow Rate 1.0 ml/min
Detection ELSD
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Bromide, Ammonium

Application Analytes:
Ammonium Ion
Lithium
Potassium
Sodium

Application Detection:
ELSD/MS Detection

HPLC Separation of Potassium, Perchlorate, Methanesulfonic, Chloride, Bromide, and Nitrate Ions on Obelisc N

2010-03-03
Ion chromatography is usually used for analysis of hydrophilic organic and inorganic ions. Same separation can be achieved on HILIC/mixed-mode Obelisc N HPLC columns. Obelisc N HPLC columns have very polar groups on their surface: one of the groups is basic and the other acidic. In case of low organic concentration, two groups are connected by hydrophilic linker. Obelisc N column can be used as cation-exchange and anion-exchange column. This allows to separate positively and negatively charged molecules in one run. Five anions (chloride, bromide, methanesulfonate, nitrate and perchlorate) along with one cation (sodium) were separated in one run. Method is compatible with ELSD, CAD and LC/MS and can be used for analysis of various hydrophilic and hydrophobic cations and anions in one HPLC run.

Condition

Column Obelisc N, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmFm
Flow Rate 1.0 ml/min
Detection ELSD
 

Description

Class of Compounds Hydrophilic, Ions
Analyzing Compounds Chloride, Nitrate, Chlorate, Bromide, Potassium
 
Application Analytes:
Bromide
Chloride
Methanesulfonic Acid
Nitrate
Nitric Acid
Potassium

Application Detection:
ELSD/MS Detection

Reverse Elution Order in Separation of Alkali Cation

2006-08-12
Primesep C separates a mixture of inorganic cations, potassium, sodium, and lithium, by a combination of cation exchange and complex formation. The peak order is reversed on the Primesep C column compared to the order normally obtained on columns that rely on cation exchange alone. The mobile phase mixture of water, acetonitrile (MeCN, ACN) and ammonium acetate is compatible with UV and evaporative light scattering detection (ELSD).

Condition

Column Primesep C, 4.6x50 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmAc
Flow Rate 1.0 ml/min
Detection ELSD 50C
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Lithium, Chloride
 
Application Analytes:
Lithium
Potassium
Sodium

Application Detection:
ELSD/MS Detection

Effect of Concentration of Organic Modifier on Retention of Cation and Anions

2005-11-20
Primesep 100 and Primesep B columns connected in series allow the quantitation of sodium chloride and potassium bromide ions in one injection. The Primesep B column retains the chloride and bromide anions by anion exchange, and the Primesep 100 retains the sodium and potassium cations by cation exchange. The retention can be adjusted by changing the water/acetonitrile ratio in the mobile phase. The separation uses a mobile phase mixture of water, acetonitrile (MeCN, ACN) and ammonium acetate with evaporative light scattering detection (ELSD).

Condition

Column Primesep 100, Primesep B , 4.6x50 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmAc pH 5.0
Flow Rate 1.0 ml/min
Detection ELSD
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Bromide, Chloride
 
Application Analytes:
Bromide
Chloride
Potassium
Sodium

Application Detection:
ELSD/MS Detection

Simultaneous Separation of Cations and Anions

2005-11-15
Primesep 100 and Primesep B columns connected in series allow the quantitation of sodium chloride and potassium bromide ions in one injection. The Primesep B column retains the chloride and bromide anions by anion exchange, and the Primesep 100 retains the sodium and potassium captions by cation exchange. The separation uses a mobile phase mixture of water, acetonitrile (MeCN, ACN) and trifluoroacetic acid (TFA) with evaporative light scattering detection (ELSD).

Condition

Column Primesep 100, Primesep B , 4.6x50 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmAc pH 5.0
Flow Rate 1.0 ml/min
Detection ELSD 50C
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Bromide, Chloride
 
Application Analytes:
Bromide
Chloride
Potassium
Sodium

Application Detection:
ELSD/MS Detection

Complex of Cations on Primesep C is Effected by Organic Modifier

2005-10-15
Primesep C separates a mixture of inorganic cations, potassium, sodium, and lithium, by a combination of cation exchange and complex formation. The peak order is reversed on the Primesep C column compared to the order normally obtained on columns that rely on cation exchange alone. In addition, the elution order can be rearranged by simply changing the organic modifier in the mobile phase from acetonitrile to methanol. The mobile phase mixture of water, acetonitrile (MeCN, ACN) or methanol (MeOH) and ammonium acetate is compatible with UV and evaporative light scattering detection (ELSD).

Condition

Column Primesep C, 4.6x50 mm, 5 µm, 100A
Mobile Phase MeOH, MeCN
Buffer AmAc pH 5.0
Flow Rate 1.0 ml/min
Detection ELSD 50C
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Potassium,  Lithium, Chloride
 
Application Analytes:
Lithium
Potassium
Sodium

Application Detection:
ELSD/MS Detection

Separation of Metal Ions on Primesep 100 Column

2005-10-04
Primesep 100 separates the monovalent cations, lithium, potassium, and sodium, and the divalent cations, zinc, manganese, and calcium. The cations are resolved by cation exchange. The mobile phase mixture of water, acetonitrile (MeCN, ACN) and trifluoroacetic acid (TFA) is evaporative light scattering detection (ELSD) compatible.

Condition

Column Primesep 100, 4.6x250 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer TFA
Flow Rate 1.0 ml/min
Detection ELSD 50C
 

Description

Class of Compounds Ions,  Hydrophilic, Ionizable, Vitamin, Supplements
Analyzing Compounds Sodium, Phosphate, Magnesium, Calcium, Lithium, Zinc
 
Application Analytes:
Calcium
Chloride
Lithium
Magnesium
Potassium
Sodium
Zinc

Application Detection:
ELSD/MS Detection

Potassium Analysis in Organic Reaction Product

2003-08-12



Primesep 100 separates a mixture of an organic starting material, its product, and residual potassium ion. The potassium cation is retained by cation exchange and the organic starting material and product are retained by hydrophobic and ionic interactions. The mobile phase mixture of water, acetonitrile (MeCN, ACN) and trifluoroacetic acid (TFA) is UV, MS, and evaporative light scattering detection (ELSD) compatible.


Application Analytes:
Potassium

Application Detection:
UV Detection
ELSD/MS Detection