Water quality - contamination avec heavy métals

Numéro d´article: P0990162

Principle

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.

Benefits

  • 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

Tasks

  • 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

 


Liste du matériel (extrait) Articles Montant
Balance de précision, Sartorius ENTRIS822-1S, 820 g / 0,01 g 49295-99 1
Cobra4 Mobile-Link 2 enregistreur mobile avec carte SD, accus, câble USB et logiciel 12620-10 1
Cobra4 capteur conductivité avec sonde en acier inox 12633-00 1
Uréase, lyophilisée 5 g 31923-02 1
Agitateur magnétique non-chauffant, 3 litres , 230 V 35761-99 1
Support pour Cobra4 12681-00 1
Hydrate de sulfate de cuivre 250 g 30126-25 1
Eau distillée 5 l 31246-81 1
Urée, 250 g 30086-25 1
Eprouvette graduée, 100 / 1 ml 36629-00 1
Eprouvette graduée 10 / 0,2 ml 36625-00 1
Pissette 500 ml, plastique 33931-00 1
Becher boro3.3 50ml forme haute 46025-00 1
Becher boro3.3 250ml forme basse 46054-00 1
Barreau magnétique 8 mm, cylindrique 46299-00 1
Becher boro3.3 100ml forme haute 46026-00 1
Pipette graduée 1 ml, en 1/100 36595-00 1
Baguette boro 3.3 L=200mm d=5mm 40485-03 2

Littérature pour cet article comme suit:

Title Produit Langue
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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Numéro d´article: P0990162

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