LABTECH Analyser of organically bound halogens and sulphur LTX Unique

In the last decade, the group parameters of organically bound halogens (AOX, EOX, POX) have become the most monitored indicators in the analysis of environmental samples. What speaks in favour of these group indicators is the constantly increasing number of individual halogenated compounds that need to be monitored in the environment, and the relative speed, simplicity and excellent reproducibility of the entire analytical determination.

LABTECH has been developing and manufacturing organically bound halogens analysers for over 20 years. The latest model in the line of AOX/EOX analysers is the LTX Unique, which is the successor of the successful LTX-2000+ model.

LTX Unique – AOX, EOX, POX and TX analyzer

LTX Unique brings easy-to-use, fast and precise determination of halogens to your lab. The modular system is capable to analyze wide range of halogen concentrations in various matrices at high flexibility and low cost operation. It meets with applicable ISO, DIN, EPA and ASTM standards.

LABTECH: LTX Unique – AOX, EOX, POX and TX analyzer

Analysis of Adsorbable Organic Halogens (AOX)

Most organic halogens are originated during utilization of different kind of solid and liquide materials and compounds which contain chlorine substances. Monitoring of processes like water treatment, bleaching, refinery and many others industrial processes is important to avoid contamination of environment by organic halogens.

LTX UNIQUE is designed to measure organic bound halogens in solid and liquid samples. These halogens are determinated as specific groups of parameters:

• AOX (Adsorbable Organic Halogens)
• EOX (Extractable Organic Halogens)
• POX (Purgeable Organic Halogens)
• TX (Total Organic Halogens)

LABTECH: LTX UNIQUE - Analysis of Adsorbable Organic Halogens (AOX)

LTX UNIQUE meets your lab needs

This microcoulometric combustion analyzer directly determinates concentrations of usually 10 micrograms per litre in water of organically bound chlorine, bromine and iodine (expressed as chloride or halogens) adsorbable on activated carbon. Higher concentrations are possible by diluting prior to analysis. The AOX analyzer can be used for either routine determination of halogens or R&D in a wide range of environmental and industrial applications.

LABTECH: LTX UNIQUE - titration curve

LTX Unique – highlights of the technology

Furnace

• High temperature furnace with adjustable temperature control
• Robust combustion tube allows efficient and time-optimized combustion proces
• Pre-treatment before the combustion process
• Same combustion unit for AOX and EOX determination

Microcoulometric Titration

• Durable and easy-to-use titration cell designed by Labtech
• Wide dynamic range and high stability microcoulometer
• Robust and compact electrodes with low and easy maintenance
• Suitable for a separate determination of halides

LABTECH: LTX UNIQUE - Microcoulometric Titration

Sample Introduction and Measurement

• Measurement of organic halogens in liquide and solid samples
• Both quarts boats and frits are supported
• Fast and easy switch over between AOX and EOX modules conected to the same measurement unit
• Intuitive application SW quides the operator and save time for analysis

LABTECH: LTX UNIQUE - Sample Introduction and Measurement

Determination of Organic Halogens

LTX Unique meets with all requirement in AOX analysis and other international and local standards are also supported (e.g. EOX, POX and TX methods). Halogens can be determined from a wide range of matrices by combustion process and microcoulemetric measurement. The following examples can give an overview how organically bound halogens are determinated:

• AOX (Adsorbable Organic Halogens)

  • according to ISO 9562, DIN EN 9562, DIN 38 414-S18, ASTM D 4744-89, EPA Method 450.1, EPA Test Method 9020
  • Halogens are measured by sorption of organohalides from the aqueous sample on activated charcoal according to standardizes procedures. This charcoal is introduced to cumbustion tube.

• EOX (Extractable Organic Halogens)

  • according to NEN 6402, DIN 38409-H8, DIN 38414-S17.
  • These organic halogens are determinated by extraction with low polar solvent.

• POX (Purgeable Organic Halogens)

  • according DIN 38414-S17, EPA Test Method 9021
  • Volatile organic halogens as purched components are measured from water or suspension in inert gas at certain temperature.

• TX (Total Organic Halogens)

  • according to EPA 9076
  • Determination of TX is run on a wide range of liquid hydrocarbon samples without any separation.

Specifications of LTX UNIQUE

• Dimensions: 970 x 360 x 295 mm (W x D x H)
• Weight: 27 kg
• Furnace temp.: Max. 1100 °C
• Power supply: 230 V / 50 Hz, max.1100 W
• Gas requirements: Oxygen 99.6 % (AOX/EOX)
• Argon: 99.996 % (EOX)
• Software: ENGINE LT
• PC: Windows® 10
• Detector: Microcoulometer with Ag indication electrode
• Titration currents: 2000, 200, 20 and 2 uA
• Measuring range: 0,1 - 300 µg Cl-
• Limit of detection: 0,02 µg Cl-