Sensor Quiz 2

Question 1

What is JCAD

Answer 1

Microbalance Based Detector

Question 2

What does JCAD detect

Answer 2

selective for specific functional group

Question 3

Interaction between CwA and polymer surface in JCAD

Answer 3

non-covalent
based on solubility

Question 4

What type of substance does JCAD test for

Answer 4

Vapours and liquids

Question 5

What does FTIR Spectroscopy detect

Answer 5

measure the amount fo light absorbed at a specific wavelngth

Question 6

what does FTIR LOOK FOR

Answer 6

characteristics of chemical groups

Question 7

True or false: The intensity of FTIR absorption is proportional to the concentration of the targeted chemical

Answer 7

True

Question 8

Sensitivity, LOD and detecition of FTIR

Answer 8

High sensitivity, low LOD and fast detection of vapours

Question 9

True or false: FTIR is destructive

Answer 9

FALSE

Question 10

What kind of susbtance does THREATID device FTIR detect

Answer 10

Solid, liquid and gas mixture analysis

Question 11

First defender device

Answer 11

warmup less and one second
takes 15 seconds
non-destructive
correctly identifies 78/88 CWAs
Failures in detection are below 10%

Question 12

Gas phase detection of CWA with portable raman

Answer 12

~500 cm = bending of phosphate
~700 cm = stretching of PC
~800,830 cm = bending of phosphate 2

Question 13

what is SERS spectrum

Answer 13

2.5ppmv

Question 14

What is the intesnsity value peak at of DMMP at exposure time 2.5ppmv

Answer 14

~700cm

Question 15

SERS Integrated Centrifugal microfluidic platform for detection facts

Answer 15

Concentration dependent intensity of charactereistic GA at 2100cm

Concentration dependent intensity of vx at 900cm
LOD is ~4.00ppm

Question 16

what is bioterrorism

Answer 16

involves deliberate release of bioweapons to cause death or disease

Question 17

What is Bioterrorism interpol

Answer 17

the spread of infectious or toxic biological agents can happen without warning

Question 18

What is biotracker

Answer 18

consists of an itelligence repository and visualization interface which member countries can feed and benefit from

Question 19

three biological agents for bioterrorism

Answer 19

anthrax - bacterial toxin
botulin - bacterial toxin
Ricin - plant toxin

Question 20

Methods of dissemination of toxins

Answer 20

air, food, water, soil

Question 21

Lab based methods of biological agents

Answer 21

Immunoassays
PCR assays
Animal assays

Question 22

On-site testing methods of bioogical agents

Answer 22

Colorimetric detection
Fluorescent detection
electro chemical detection

Question 23

What are device requirements

Answer 23

attract non-covalently

Question 24

How to find recognition probe on ricin

Answer 24

protein-protein
Protein-nucleic acids
antibodies-protein

Question 25

What is ricin sensor recognition probe

Answer 25

nucleic acid

Question 26

What is a bulge

Answer 26

Mad eof C nuclear base

Question 27

Where does probe attach to surface

Answer 27

Graphene surface

Question 28

How is the FAM molecule attached

Answer 28

covalently to the 5' end

Question 29

Relationship of detection and fluorescence

Answer 29

increase in fluorescent dye, increase in signal

Question 30

Where is the dye quenched

Answer 30

near carbon surfaces

Question 31

A self-driven microfluidic chip in ricin detection paper facts

Answer 31

Measured fluorescence Detection of AT and RT Greater intensity of colour, higher the value tested at 700nm Bot, ETX, AT and PBS were negative, Ricin was positive

Question 32

What was the botulin toxin colorimetric antibody based test measured in

Answer 32

ng/mL - measures absorbance increase of concentration = increase of absorbance

Question 33

What is the most sensitive test

Answer 33

colorimetric

Question 34

Anthrax spore detection using antibodies describe the test

Answer 34

sample goes on detection pad Conjugate pad is where binding occurs Spores bind to antibody Travel through the test line and control line antibody binds to lines If anthrax is in sample it will be captured by antibody and both lines are coloured

Question 35

Dipicolinic acid or DPA structure

Answer 35

Pridine, 2 carboxylic acids

Question 36

What is a major component of anthrax spores

Answer 36

DPA, 15% of dry mass

Question 37

Under UV lamp what colour does DPA positive

Answer 37

Red

Question 38

What is the range DPA is measured in

Answer 38

micromolar