With most OPamps, like TL084 and similar: No. These OPamps are designed to guarantee an output voltage swing of +-10V with +-15V supply, and the best you get is about 1V less than supply voltage, provided that a high impedance load is connected to output. Means with a +-15V no more than +-14V can be produced at output.
So, if you choose an unipolar supply voltage of +12V and ground, then these OPamps cannot produce 0V at output, but only about +1V.
Even more demanding is the common mode input voltage range, which will not allow the OPamp to be driven with less than about 3V at inputs. Allowed input voltage range then is about 3V...9V, which seems to violate your application.

Several ways are possible to circumvent problems:

1. You choose an ADC, which contains are protection circuit at analog inputs, allowing to input voltages of up to +-16.5V, like some MAXIM parts offer. Then you can furtherly run your analog front end with +-15V.

2. You choose an ADC, which at least allows to flow a specified maximum input current into the analog inputs. These parts mostly have two protection diodes from each input to Vcc and ground, and can be protected by simply inserting a current limiting resistor between output of OPamp and acccording analog input of ADC.

3. You change the supply voltage of analog front end electronics, so that

(a) either no further protection circuit is needed, or
(b) the needs for the protection circuit are less demanding.

To (a): If you choose an OPamp like LMV324

http://cache.national.com/ds/LM/LMV321.pdf

, which is a "rail-to-rail" representative, then output voltages between about 0.07V...4.95V are achievable with Vcc = 5V. Then you can choose only one 5V supply voltage for the digital and analog components.

To (b): I f you choose an OPamp like LM324

http://cache.national.com/ds/LM/LM124.pdf

, which allows an output voltage between about 0,05V...(Vcc - 1.5V), then you can choose an unipolar analog supply voltage of about +6.5V and ground. Then, a much lower possible overvoltage has to be handled at input of your ADC, which minimizes the needs for the according protection circuit.

Kai