Based on the unmatched detection limits, polarography/voltammetry is becoming an increasingly adopted principle in modern trace analysis. In comparison to AAS and ICP-OES you have not only better detection limits but also lower costs. The trace element analyzer TEA 4000 was developed in our company together with the Heyrowsky-Institute.

The system includes our hanging mercury drop electrode (HMDE) which enables trace analysis with extremely low detection limits. The mercury consumption using the HMDE is not more than approx. 1 – 2 ml per year. Alternatively the system can be fitted with solid state electrodes as glassy carbon, gold, platinum and silver.

The TEA 4000 includes a user friendly software with powerful measurement and calculation tools. The polarographic stand is completely controlled by the software. All important measurement techniques are available on the TEA 4000.

• Differential-Puls-Polarography
• Differential-Puls-Stripping-Polarography
• DC Polarography
• Anodic and Cathodic Stripping Voltammetry
• Cyclic Voltammetry
• Cyclic Voltammetric Stripping

The price and the permanent costs while running are still very low compared with other analytical techniques, and the detection limits are still unmatched.

Prominent Features

• Compact, minimum space requirements.
• Compatible with any commercial PC or notebook.
• Software for control and calculation
• All typical voltammetric/polarographic analysis methods available.
• Hanging Mercury Drop Electrode with low Hg-consumption.
• Solid-state electrodes (glassy carbon, gold, platinum and silver).

Advantages in comparison to AAS and ICP:

• Low price
• Can be used without expensive inert gases
• Very easy to use
• Very low detection limits
• Easy sample preparation and short analysis time
• Simultaneous detection of more than one element
• Portable system for outdoor analysis

System Equipment

The basic equipment of the TEA 4000 includes the electronic stand, the electrodes, the software and all accessories required for laboratory analysis. Power is provided by a 12 V DC power supply, connection to the computer is via USB.

Optional accessories

We provide different standard kits which includes standard solutions and other chemicals as buffers, chelating agents etc. For mains independent measurements we provide a rechargeable battery pack.

TEA 4000 Field Case

The field case is specially designed to carry the electrode stand, the electrodes, standard solutions, and other accessories. A small bottle of nitrogen gas can be picked up as well as the optional battery pack. So the TEA 4000 is a really ready to use portable polarographic system.

Fields of application of TEA 4000

The polarography/voltammetry is one of the most important analytical techniques in the fields of environmental protection, mineralogy, metallurgy, geology and in the chemical industry. Fields of application are:

• Environmental analysis of natural waters and soils.
• Waste water and process water monitoring in chemical industry.
• Purity analysis in galvanic and electronic industry.
• Tribodiagnostics of motor oils and other lubricants.
• Trace analysis in pharmacy, biochemistry and food control.

A lot of different substances can be determined with very low detection limits as for instance:

Cations
Cadmium, Lead and Copper, Zinc, Cadmium, Lead and Copper, Manganese and Iron, Iron (III) and Total-iron, Lead, Antimony, Arsenic, Nickel, Selenium, Chromium, Vanadium, Tin, Ammonium, Beryllium, Aluminium, Manganese, Mercury, Silver

Anions
Sulfide, Sulfite and Thiosulfate, Chloride and Bromide, Nitrate, Nitrite, Cyanide, Phosphate

Organic Compounds
Vitamin C in fruit juice, Vitamin B2, Vitamin B9, Nicotinamides, Cystine and Cysteine, Oil in Water, PCB/TCB, Pesticides, Aldehydes