| 1 |
What is hybrid micellar liquid chromatography primarily used for in the study?
|
To detect commonly used pesticides in vegetables. |
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กําหนดคุณสมบัติของสารประกอบ โดยเฉพาะอย่างยิ่งค่าคงที่การแยกตัวของกรด (pKa) และค่าสัมประสิทธิ์การแบ่งส่วน (log P) และเพื่อวัดปริมาณสารในเมทริกซ์ที่ซับซ้อน |
hybrid micellar liquid chromatography coupled to a photodiode array detector has been developed
and validated to monitor imidacloprid, chlorpyrifos, profenofos and cypermethrin content in green leafy vegetables. |
7 |
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| 2 |
Which pesticide was found most commonly in the vegetable samples?
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Chlorpyrifos |
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พบว่าคลอร์ไพริฟอสเป็นสารกําจัดศัตรูพืชที่ใช้กันมากที่สุดในหมู่ผู้ปลูกผัก พบในตัวอย่างถึง 76% |
Chlorpyrifos was found to be the most commonly used pesticide among vegetable growers. |
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| 3 |
What percentage of the vegetable samples tested were found to contain no detectable pesticides?
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16% |
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Sixteen percent of the collected samples were found to be negative for the selected pesticides. |
Sixteen percent of the collected samples were found to be negative for the selected pesticides. |
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| 4 |
Which of the following is NOT a reason for the use of hybrid micellar liquid chromatography (HMLC)?
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It requires extensive solvent use. |
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- |
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| 5 |
What was the primary methodological change in the HMLC technique used in the study?
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Use of a micellar mobile phase with reduced solvent usage. |
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- |
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| 6 |
According to the study, why might vegetable growers prefer other pesticides over Imidacloprid (ICP)?
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ICP is more expensive. |
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OPs (organophosphates) i.e. were available at lower prices (around ten times) in comparison to that of NN (ICP). |
ICP was not the preferred pesticide by veg-
etable growers. |
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| 7 |
What is the major benefit of using ICP as a pesticide, according to the study?
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It is less toxic compared to many others. |
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- |
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| 8 |
What aspect of the pesticide detection method was focused on during the method validation phase?
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Ensuring it can detect extremely low pesticide levels. |
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ตรวจสอบให้แน่ใจว่าสามารถตรวจจับระดับสารกําจัดศัตรูพืชที่ต่ํามากได้ |
Therefore, the method detection limit was selected as
the lowest detected concentration and the method quantification limit
the lowest quantification concentration of the analytes. |
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| 9 |
Considering the environmental impacts discussed, why is the HMLC method considered 'green'?
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It involves less waste and uses low-toxicity solvents. |
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- |
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| 10 |
What is the importance of the photodiode array detector in the HMLC technique used in the study?
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It increases the cost of the analysis. |
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- |
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| 11 |
What is hyperthermia commonly used to treat?
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Cancer |
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The main mechanism involved is by killing the cancer cells |
Hyperthermia (also known as thermotherapy) is generally regarded as a mean body temperature higher than normal
(Alexander, 2008). High body temperature is often caused by illness, such as fever or heat stroke. Research has shown that elevated body temperature can damage and kill cancerous cells with minimal injury to normal cells |
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| 12 |
Which method is used to apply heat directly to a tumor in local hyperthermia?
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Microwaves |
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- |
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| 13 |
What is the primary benefit of using hyperthermia in cancer treatment?
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It kills cancer cells with minimal damage to normal cells. |
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Hyperthermia: Role and Risk Factor for Cancer Treatment |
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| 14 |
Hyperthermia is often used in combination with which of the following treatments?
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Radiotherapy and chemotherapy |
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- |
Hyperthermia: Role and Risk Factor for Cancer Treatment |
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| 15 |
What is the main challenge of using hyperthermia in cancer treatment?
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It is very expensive. |
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- |
Hyperthermia: Role and Risk Factor for Cancer Treatment |
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| 16 |
Which type of hyperthermia involves heating a larger region or the whole body?
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Regional hyperthermia |
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| 17 |
What type of hyperthermia uses applicators inserted into or near a body cavity to deliver heat?
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Whole-body hyperthermia |
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| 18 |
What is a significant potential side effect of whole-body hyperthermia?
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Increased appetite |
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| 19 |
Considering the physics of heat transfer, why is controlling hyperthermia challenging during treatment?
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Heat treatment requires continuous power supply which is not feasible in medical settings. |
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| 20 |
Why is hyperthermia considered a beneficial adjunct to radiotherapy and chemotherapy?
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It can replace both treatments entirely. |
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