User:Rebeca Rodriguez/Notebook/581/2014/09/19

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  1. Start Analysis on pXRD spectra
  2. new PVA and 10% PVA-clay synthesis
  3. set up new experiments with PVA and PVA-clay films soaking in Arsenic (As) and Mercury (Hg) each with 150ppm, 100ppm, 50ppm


Synthesis of new films

Synthesis is the same that was used on August 26th, 2014

  • 10% PVA-Clay film

1.0037g PVA and 0.1099g NaMT clay

  • PVA film

0.9998g PVA

PVA and PVA-clay in Hg and As

Mass of films in each vial

Vial # Label weight of vial and cap (g) weight of vial, cap and film (g) weight of film (g)
1PVA As 150ppm16.408816.49960.0908
2PVA As 100ppm16.436916.57230.1354
3PVA As 50ppm16.400516.48690.0864
4PVA Hg 150ppm16.372116.48030.1082
5PVA Hg 100 ppm16.414516.53220.1177
6PVA Hg 50 ppm16.364316.4890.1247
7PVAC As 150ppm16.348916.44250.0936
8PVAC As 100ppm16.460316.62090.1606
9PVACAs 50ppm16.459516.54390.0844
10PVAC Hg 150 ppm16.420816.57720.1564
11PVAC Hg 100 ppm16.462416.64480.1824
12PVAC HG 50 ppm16.342916.40280.0599

Table of Solution Preparation

Stock Solution (M) 0.0499
As stock solution (ppm) 3738.61
As 150ppm solution 4mL stock in 100mL
As 100ppm Solution 2.76mL stock in 100mL
As 50ppm solution1.32mL stock in 100mL
Hg stock solution (ppm) 268
Hg 150ppm solution13.99mL stock in 25mL
Hg 100ppm solution9.32mL stock in 25mL
Hg 50ppm solution 4.66mL stock in 25mL

PVA-Clay Cation Exchange

  1. After centrifugation the clay was laid out on a watch glass and dried
  2. The dried clay was removed from glass and crushed using a mortar and pestle
  3. It was then transferred into a scintillation vial and massed 1.0484g of NaMT cation exchange powder
  4. The vial was placed into a oven in order to remove any excess hydrate


XRD analysis of PVA film soaked in 80ppm Malachite Green

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