Title
Die EisenKonzentration im Porenraum: NMR als Mittel zur Beobachtung der gelsten EisenKonzentration im Porenraum von Sedimenten,Used
Delivery time: 8-12 business days (International)
In der vorliegenden Dissertation wurde die Methode der magnetischen Kernspinresonanz (NMR) eingesetzt, um beim Schadstoffabbau stattfindende Prozesse und geochemische Reaktionen zerstrungs und beprobungsfrei zu untersuchen. Dies ist mglich, da die gelsten Elektronenakzeptoren Sauerstoff und Eisen paramagnetisch sind und somit Einfluss auf die NMRRelaxationszeiten ausben. Der lineare Zusammenhang zwischen der gelsten Sauerstoff bzw. EisenKonzentration und den NMRRelaxationsraten wird quantifiziert. Wird die Oberflchenrelaxation bercksichtigt, ist es auch in porsen Medien mglich den Gehalt an paramagnetischen Ionen aus Relaxationsmessungen zu ermitteln. Die beim biologischen Schadstoffabbau auftretenden Redoxprozesse des Eisens wurden durch rein chemische Reaktionen simuliert. Die zeitlich und rumlich detaillierte Beobachtung des Anstiegs bzw. Abfalls der gelsten Eisen(III)Konzentration in der (Poren)Lsung ist mit NMRRelaxometrie trotz der Schnelligkeit der Reaktionen mglich. Mit Hilfe einer Modellierung wird der wichtige Einfluss des phWertes auf den genauen Ablauf der Reaktion deutlich gemacht.
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⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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