Odour Threshold Investigation 2012 - Bay of Plenty Regional Council

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6.5 Equipment 29 6.6 Requirements of the panellist 29 6.7 Calculation of odour concentration 30 Part 7: Analysis of the results 33 7.1 Testing room parameters 33 7.2 Panel characteristics 35 7.3 Result structure 36 7.4 Incomplete rounds 37 7.5 Hydrogen sulphide 39 7.6 n-Butanol results 48 Part 8: Discussion and conclusion 51 8.1 Discussion 51 8.2 Conclusion 53 Appendix 1 – Olfactometer calibration sheet 57 Appendix 2 – Calibration gas certification 59 Appendix 3 – Dr Ray Littler analysis report 61 iv Environmental Publication 2012/06–A review of odour properties of H 2 S odour threshold investigation 2012
Tables and Figures Table 3.1 Human health effects at various hydrogen sulphide concentrations. 9 Table 4.1 Ambient recorded data summary for the Bay of Plenty. 19 Table 7.1 Mean threshold values (µg/m 3 ) for all data and by location. 42 Figure 2.1 Odorant receptors and the organisation of the olfactometry system. 4 Figure 2.2 Figure 2.3 Figure 4.1 The normal range concept showing a potential population distribution of olfactory sensitivities to odorants 5 . 5 Relative slope of odour intensity for ammonia and hydrogen sulphide 5 . 6 BOPRC complaints database output based on air complaint categories. 11 Figure 4.2 Seasonal diurnal patterns recorded at Ti Street, Rotorua 15 Figure 4.3 Ambient TRS data frequency from Awakaponga site. 16 Figure 4.4 Ambient TRS data frequency from Edgecumbe site 49 . 17 Figure 5.1 Figure 6.1 H 2 S threshold values from van Gemert (Note: data in red are additions which were sourced during the production of this report). 22 Nalophan sample bag H 2 S concentrations (µg/m 3 ) measured with the Jerome during each day of testing, before and after rounds and as new bags were introduced to the testing. 31 Figure 7.1 Room parameters for both locations during testing. 33 Figure 7.2 Indoor H 2 S levels during testing in Rotorua. 34 Figure 7.3 Effect of elevated ambient H 2 S level during testing. 35 Figure 7.4 Graphical summaries of panellist characteristics. 36 Figure 7.5 Ideal testing structure per panellist. 37 Figure 7.6 Number of rounds recorded per panellist. 37 Figure 7.7 Example of incomplete rounds (Panellists 3 and 5) with individual thresholds still being determined upon “completion” of the round. 38 Figure 7.8 Graphic of incomplete rounds and hence removed data points. 39 Figure 7.8 Counts of threshold concentrations. 39 Figure 7.9 Graphical summary of the “round” data. 40 Environmental Publication 2012/06–A review of odour properties of H 2 S odour threshold investigation 2012 v
Page 1: A review of odour properties of H 2
Page 5: Acknowledgements Dr Bruce Graham fo
Page 8 and 9: In relation to the second question
Page 12 and 13: Figure 7.10 Graphical summary of th
Page 14 and 15: The standardisation of DDO in Austr
Page 16 and 17: Figure 2.1 Odorant receptors and th
Page 18 and 19: Figure 2.3 Relative slope of odour
Page 21: Part 3: H 2 S health effects The pr
Page 24 and 25: such as composting can provide very
Page 26 and 27: Seigel et al 32 undertook measureme
Page 28 and 29: Rotorua District Council also under
Page 30 and 31: Kevern 56 undertook several surveys
Page 33 and 34: Part 5: H 2 S threshold information
Page 35 and 36: The American Industrial Hygiene Ass
Page 37: Earlier summaries of data in relati
Page 40 and 41: The results generated by the olfact
Page 42 and 43: At each round of the testing proces
Page 44 and 45: 6.7.2 n-Butanol vapour The standard
Page 46 and 47: 7.1.2 Ambient H 2 S levels No H 2 S
Page 48 and 49: Residence time for Rotorua panellis
Page 50 and 51: Figure 7.7 Example of incomplete ro
Page 52 and 53: A display of the “round” values
Page 54 and 55: Figure 7.11 Log 10 mean session dat
Page 56 and 57: Panellist means Figure 7.12 t-test
Page 58 and 59: The original concept behind the tes
Page 60 and 61:
Figure 7.16 Frequency plots - perce
Page 62 and 63:
Figure 7.17 Scatterplot showing n-b
Page 64 and 65:
Several types of analysis of the gr
Page 66 and 67:
Figure 8.1 Updated H 2 S threshold
Page 69:
Appendix 1 - Olfactometer calibrati
Page 73 and 74:
Appendix 3 - Dr Ray Littler analysi
Page 75 and 76:
Effect of elevated ambient H 2 S On
Page 77 and 78:
Figure 4 Untransformed is non-norma
Page 79 and 80:
14 Histogram of MnH2S_Whakatāne 12
Page 81:
Histogram of Mn butanol Lognormal R
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Odour Threshold Investigation 2012 - Bay of Plenty Regional Council

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