Voltammetric determination of lead in vegetable juice samples
This research investigated lead concentrations in vegetables juices were investigated as they are toxic to our body. The average daily intake of lead in vegetables juices is only 0.5 ppm due to its toxicity to our body. Lead can be adsorbed into vegetables through the water that use for watering...
| Main Author: | |
|---|---|
| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2015
|
| Subjects: | |
| Online Access: | http://eprints.usm.my/60187/ http://eprints.usm.my/60187/1/NOR%20FATIN%20AYUNI%20BINTI%20MOHAMAD%20NOR%20-%20e.pdf |
| _version_ | 1848884375511367680 |
|---|---|
| author | Nor, Nor Fatin Ayuni Mohamad |
| author_facet | Nor, Nor Fatin Ayuni Mohamad |
| author_sort | Nor, Nor Fatin Ayuni Mohamad |
| building | USM Institutional Repository |
| collection | Online Access |
| description | This research investigated lead concentrations in vegetables juices were investigated as they
are toxic to our body. The average daily intake of lead in vegetables juices is only 0.5 ppm
due to its toxicity to our body. Lead can be adsorbed into vegetables through the water that
use for watering the vegetables. It also may come from the water that use to make juice. In
this work, the presence of lead levels in vegetables juices such as tomato, pumpkin, winter
chestnut, winter melon, carrot, spinach, kale, cabbage, mustard, and eggplant were determined
by Differential Pulse Anodic Stripping Voltammetry (DPASV) after wet digestion of the
organic matter. Standard addition method was used for this analysis. Parameters used for
DPASV were as follows, start potential: -0.599 V, end potential: -0.199 V, deposition time:
60 s, equilibrium time: 10 s, voltage step: 0.005951 V, voltage step time: 0.15 s, sweep rate:
0.0397 V/s, pulse amplitude: 0.05005 V, pulse time: 0.04 s.The result of lead concentration in
tomato, pumpkin, carrot, spinach, kale, cabbage, mustard, and eggplant were 24.455 ppb,
18.755 ppb, 11.420 ppb, 0.440 ppb, 2.850 ppb, 6.155 ppb, 5.392 ppb and 3.164 ppb
respectively. Lead was not detected in winter chestnut and winter melon juices. |
| first_indexed | 2025-11-15T19:05:42Z |
| format | Monograph |
| id | usm-60187 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T19:05:42Z |
| publishDate | 2015 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-601872024-04-07T03:17:56Z http://eprints.usm.my/60187/ Voltammetric determination of lead in vegetable juice samples Nor, Nor Fatin Ayuni Mohamad R Medicine (General) RM214-258 Diet therapy. Dietary cookbooks This research investigated lead concentrations in vegetables juices were investigated as they are toxic to our body. The average daily intake of lead in vegetables juices is only 0.5 ppm due to its toxicity to our body. Lead can be adsorbed into vegetables through the water that use for watering the vegetables. It also may come from the water that use to make juice. In this work, the presence of lead levels in vegetables juices such as tomato, pumpkin, winter chestnut, winter melon, carrot, spinach, kale, cabbage, mustard, and eggplant were determined by Differential Pulse Anodic Stripping Voltammetry (DPASV) after wet digestion of the organic matter. Standard addition method was used for this analysis. Parameters used for DPASV were as follows, start potential: -0.599 V, end potential: -0.199 V, deposition time: 60 s, equilibrium time: 10 s, voltage step: 0.005951 V, voltage step time: 0.15 s, sweep rate: 0.0397 V/s, pulse amplitude: 0.05005 V, pulse time: 0.04 s.The result of lead concentration in tomato, pumpkin, carrot, spinach, kale, cabbage, mustard, and eggplant were 24.455 ppb, 18.755 ppb, 11.420 ppb, 0.440 ppb, 2.850 ppb, 6.155 ppb, 5.392 ppb and 3.164 ppb respectively. Lead was not detected in winter chestnut and winter melon juices. Universiti Sains Malaysia 2015 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/60187/1/NOR%20FATIN%20AYUNI%20BINTI%20MOHAMAD%20NOR%20-%20e.pdf Nor, Nor Fatin Ayuni Mohamad (2015) Voltammetric determination of lead in vegetable juice samples. Project Report. Universiti Sains Malaysia. (Submitted) |
| spellingShingle | R Medicine (General) RM214-258 Diet therapy. Dietary cookbooks Nor, Nor Fatin Ayuni Mohamad Voltammetric determination of lead in vegetable juice samples |
| title | Voltammetric determination of lead in vegetable juice samples |
| title_full | Voltammetric determination of lead in vegetable juice samples |
| title_fullStr | Voltammetric determination of lead in vegetable juice samples |
| title_full_unstemmed | Voltammetric determination of lead in vegetable juice samples |
| title_short | Voltammetric determination of lead in vegetable juice samples |
| title_sort | voltammetric determination of lead in vegetable juice samples |
| topic | R Medicine (General) RM214-258 Diet therapy. Dietary cookbooks |
| url | http://eprints.usm.my/60187/ http://eprints.usm.my/60187/1/NOR%20FATIN%20AYUNI%20BINTI%20MOHAMAD%20NOR%20-%20e.pdf |