09 Instrumentation Laboratory

This event is limited to the first 24 entries.

2018 Topic: Using a Smartphone as a Spectrophotometer

OBJECTIVE

UV-Vis Spectrophotometry has been one of the most important analytical tools in science.  The objective of this event is to turn a Smartphone into a UV-Vis spectrophotometer to analyze one of three different colored solutions accurately. (No Kits allowed) 


Materials Provided by NJIT on the Day of the Event

  • Unknown concentration of one of the following solutions: Cobalt (2+), Copper (2+), or Nickel (2+) ion
  • Graph paper (1/4 inch)

 

Materials & Methods Brought by Team to the Competition: 

  • Bring whatever is needed to perform the experiment. 
  • Make sure the team has brought enough deionized water.
  • Prior to the competition, each team must provide the judges with a typed step-by-step description of the methods they intend to use to address the objective of this experiment.  

INSTRUCTORS NOTES ON SPECIAL SAFETY CONSIDERATIONS:

  • Laboratory should be supervised by instructor/coach at all times.  
  • Review all procedures for safety concerns.  
  • Teams will be permitted to perform their experiment only if their procedure is approved by the judges in accordance with safety protocols.
  • Safety protocol must be addressed in the team's procedure submitted for evaluation prior to event.
  • Teams must practice procedure prior to event day. Judges reserve the right to dismiss unprepared teams the day of the event.


Prior to the event:

A step-by-step Description of the Theory, Methods and Safety Protocol  must be received by the NJCO Event Coordinator by the deadline indicated in the Requirement Overview. The procedure should be practiced thoroughly.  Judges may disqualify entrants who are not confident about their procedure and as a result pose a safety risk.  Be familiar with and be prepared to follow all safety guidelines associated with the method chosen.

Research appropriate small scale techniques, or microscale techniques. Lab manuals available from various scientific suppliers including Flinn Scientific, Inc. Furthermore, publications such as the Journal of Chemical Education may serve as sources for specific Microscale techniques.


​On the Day of the event:   

  • Follow the submitted laboratory procedure to collect and record data for a minimum of two trials.
  • A graph must be generated of known concentrations of the cation chosen for the competition.
  • The concentration of the unknown (reported in molarity) should be determined by interpolation of the graph or the linear regression formula.
  • Clean up and then submit theand report showing all calculations on the back of the report page.


Time Limit:   75 minutes


JUDGING CRITERIA

  • Description of methods, 30%
  • Description of safety concerns addressed within procedure, 10%
  • Presentation of Data and Calculations, 25%
  • Accuracy of molarity of sample,25%
  • Time, 10%


Notes:

  • In the event of a tie, the team that completes this session in the shortest period of time will win the tie.
  • Teams must clean up and remove all materials that they bring to this event and return them to their own schools.  


ALL PARTICIPANTS MUST BRING (APPROVED) GOGGLES, GLOVES AND APRON OR LAB COAT, AND USE SAFETY EQUIPMENT AT ALL TIMES DURING THE COMPETITION.  STUDENTS MUST ADHERE TO BOTH GENERAL LAB SAFETY PROTOCOLS AND THOSE SPECIFIC TO THEIR CHOSEN PROCEDURE.