Water quality - contamination with heavy metals

Продукт No: P0990162


Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanic or similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlled by these enzymes may be disturbed or prevented. Using urea hydrolysis with the aid of urease, the blocking of the enzymes by heavy-metal ions can be measured with common laboratory methods.


  • Experiment is part of an experiment set with numerous experiments in ecology
  • Universal handheld measurement device can also be used for other measurement parameters relevant in ecology, biology and chemistry
  • Outdoors measurement possible, for mobile use
  • Graphical display of measurement data
  • Data can be saved on SD memory card
  • All data can be transferred onto a computer for data analysis
  • Data analysis software included


  • Measurement of the enzymatic activity of urease as a function of the heavy metal content of different samples

What you can learn about

  • Contamination by heavy metals
  • Inhibition of enzymatic activity
  • Waste water
  • Disturance of metabolism


Перечень материалов (вы́писка) Продукт Количество
Precision Balance, Sartorius ENTRIS822-1S, 820 g / 0,01 g 49295-99 1
Cobra4 Mobile-Link 2 incl. accessories: battery, USB cable, charger and SD memory card 12620-10 1
Cobra4 Sensor-Unit Conductivity, with stainless steel electrodes 12633-00 1
Urease, lyophilized 5 g 31923-02 1
Magnetic stirrer without heating, 3 ltr., 230 V 35761-99 1
Stand for Cobra4 12681-00 1
Copper-II sulphate,cryst. 250 g 30126-25 1
Water, distilled 5 l 31246-81 1
Urea, 250 g 30086-25 1
Graduated cylinder 100 ml 36629-00 1
Graduated cylinder 10 ml 36625-00 1
Wash bottle, plastic, 500 ml 33931-00 1
Beaker, 50 ml, high-form 46025-00 1
Beaker, 250 ml, low-form 46054-00 1
Magnetic stirring bar 8 mm, cylindrical 46299-00 1
Beaker, 100 ml, high-form 46026-00 1
Graduated pipette, 1 ml 36595-00 1
Glass rod,boro 3.3,l=200mm, d=5mm 40485-03 2

Литература по данной статье

Название Продукт Язык
Handbuch Schüler- und Lehrerversuche Cobra4, Physik, Chemie, Biologie, Alltagsphänomene, TESS und DEMO 01330-01 DEU
TESS and Demo advanced Manual Cobra4 Physics, Chemistry, Biology, Everyday Science 01330-02 ENG
Handbuch Schülerversuche Cobra4 Umwelt und Freiland, TESS advanced Biologie 12622-01 DEU
TESS advanced Applied Sciences manual Cobra4 Environment and Outdoors 12622-02 ENG
Schülerversuche Umwelt und Freiland mit Cobra4, Gerätesatz für 4 Arbeitsgruppen, TESS advanced Biologie 12626-88
Schülerversuche Umwelt und Freiland für Tablets, Gerätesatz für 4 Arbeitsgruppen, TESS advanced Biologie 15626-88

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Продукт No: P0990162

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